Hello XDA.
Update.
Changed battery. Nothing changed.
Tried the suggestions posted Here no change.
Before I started this process, I was able to turn the phone on, hear the startup sounds, and charge it, no problem.
Yesterday I changed my cracked LCD (and digitizer) with one of these witrigs .com/oem-lcd-with-digitizer-for-sony-xperia-z2 (I'm not allowed to post links)
Followed the instructions provided by witrigs.
However, after having put it together again, when I try to turn it on all I get is 3 red blinks. (This would indicate low / empty battery, right?)
So I connected it to the charger (tried both wallsocket, and USB from two different computer, and different cables.) and all it gives me is a red light.
Normally, this would mean that it's charging, as far as I know, but it stays like that for hours, without any changes. So I was puzzled by this, googled to no avail.
I can not get it in flashmode, nor fastboot mode. However, here is the interesting part. When I disconnect the battery from the back and connect the phone to a charger (or USB from PC) the screen lights up, and shows me the charging animation.
In addition to this, when the battery is disconnected, I can get it into fastboot (Blue led, if I've read correct, I can not get into this with the battery connected.)
With this information, and my lack of real knowledge about how this technology works, I assumed the battery was broken, so to test that a bit further, I checked it with a multimeter.
It's currently showing 4.2v. I don't have another battery I can try with as of now, nor do I have other readings from other batteries. Maybe some of you do.
Anyway, have any of you encountered anything like this before? and or have any suggestions as to what I can / should test or try next? - I'm running out of ideas. (I will buy a new battery when I have money, but it probably will not be here in 5-8 weeks, due to when I get money and shippingtime.)
Thanks in advance for your time, and I'm terribly sorry if this has been talked about before. I searched, but maybe my searching skills are bad, as I could not find anything like this.
Edit: For the sake of trying wild things, I tried to un-brick it using flashtool and a custom FTF. Exact same condition.
-- Zaek
Update.
Lorep ipsum
Solution (?)
I have the same problem and I'm going to try this:
http://forum.xda-developers.com/xperia-z/help/hardware-fix-xperia-z-charging-booting-t2760911
Better late than never...
Zaek2 said:
Hello XDA.
Update.
Changed battery. Nothing changed.
Tried the suggestions posted Here no change.
Before I started this process, I was able to turn the phone on, hear the startup sounds, and charge it, no problem.
Yesterday I changed my cracked LCD (and digitizer) with one of these witrigs .com/oem-lcd-with-digitizer-for-sony-xperia-z2 (I'm not allowed to post links)
Followed the instructions provided by witrigs.
However, after having put it together again, when I try to turn it on all I get is 3 red blinks. (This would indicate low / empty battery, right?)
So I connected it to the charger (tried both wallsocket, and USB from two different computer, and different cables.) and all it gives me is a red light.
Normally, this would mean that it's charging, as far as I know, but it stays like that for hours, without any changes. So I was puzzled by this, googled to no avail.
I can not get it in flashmode, nor fastboot mode. However, here is the interesting part. When I disconnect the battery from the back and connect the phone to a charger (or USB from PC) the screen lights up, and shows me the charging animation.
In addition to this, when the battery is disconnected, I can get it into fastboot (Blue led, if I've read correct, I can not get into this with the battery connected.)
With this information, and my lack of real knowledge about how this technology works, I assumed the battery was broken, so to test that a bit further, I checked it with a multimeter.
It's currently showing 4.2v. I don't have another battery I can try with as of now, nor do I have other readings from other batteries. Maybe some of you do.
Anyway, have any of you encountered anything like this before? and or have any suggestions as to what I can / should test or try next? - I'm running out of ideas. (I will buy a new battery when I have money, but it probably will not be here in 5-8 weeks, due to when I get money and shippingtime.)
Thanks in advance for your time, and I'm terribly sorry if this has been talked about before. I searched, but maybe my searching skills are bad, as I could not find anything like this.
Edit: For the sake of trying wild things, I tried to un-brick it using flashtool and a custom FTF. Exact same condition.
-- Zaek
Click to expand...
Click to collapse
Same problem help us guys
What THE?
Your situation is exactly mine :crying:.
Always dreamed of this phone model, bought a cheap one with broken glass, it was working fine, I tried with a controller and was working.
Bought a high quality screen replacement that wasn't so cheap (quality seems pretty good actually).
Opened the phone using a hair dryer, it was easier than I thought and actually easier than any phone I ever opened.
Changed screen, and SAME PROBLEM AS YOU, 3 red lights, no boot. I also tried everything you tried, it shows up the battery charging icon without the battery.
ps: There got to be something pretty wrong with this, PLEASE SOMEONE HELP.
Keep Cool
guily6669 said:
What THE?
Your situation is exactly mine :crying:.
Always dreamed of this phone model, bought a cheap one with broken glass, it was working fine, I tried with a controller and was working.
Bought a high quality screen replacement that wasn't so cheap (quality seems pretty good actually).
Opened the phone using a hair dryer, it was easier than I thought and actually easier than any phone I ever opened.
Changed screen, and SAME PROBLEM AS YOU, 3 red lights, no boot. I also tried everything you tried, it shows up the battery charging icon without the battery.
ps: There got to be something pretty wrong with this, PLEASE SOMEONE HELP.
Keep Cool
Click to expand...
Click to collapse
I also am in the exact same situation. I was very carefull when I changed the display and I took my time for it (two hours!)
I used a hairdryer to make the glue soft. Maybe this overheated the battery? That is the only thing I can Think of.
Anyone else with the same problem?
Anyone else with some tips?
update: ordered a new battery. If I overheated it, it will probably work again.
Does any one now if there is some intelligence that checks if the battery has problems / damage / too high of a temperature?
Try flashing kitkat ftf without the battery. I think this is a firmware failsafe thing due to difference between display panel and display firmware on the device. Battery even when damaged should not prevent boot if the device is connected to a power source.
This is just a wild guess, too. Try flashing older ftfs that may be free of these failsafes.
5ageman said:
Try flashing kitkat ftf without the battery. I think this is a firmware failsafe thing due to difference between display panel and display firmware on the device. Battery even when damaged should not prevent boot if the device is connected to a power source.
This is just a wild guess, too. Try flashing older ftfs that may be free of these failsafes.
Click to expand...
Click to collapse
Thanks for the good tip! Sounds like that could be something too.
I tried/will try it in this order :
1) original loader, load the phone for 2 days (no success)
2) wait three days without loader ( I read about others that were about to send their phones away and then they started working again)
3) change the battery with a new one (its on its way)
4) your idea, flash the phone
I was thinking about overheating sensors in the battery. Maybe it "says" to the phone "I will not charge myself. I am damaged" (because of the high temperature when using the hair dryer).
Maybe the battery has to forget that it once was too hot?
I also thought about that the phone does not want the battery because the battery reported the high temperature to the phone (and probably an unique ID).
Maybe the phone stores somewhere that that battery is a battery with problems and thus has a "ban list" somewhere?
Any way, thank you for the tip! As a final solution, I will do that.
If that does not work, I will probably look for another phone
---------- Post added at 05:44 PM ---------- Previous post was at 05:05 PM ----------
5ageman said:
Try flashing kitkat ftf without the battery. I think this is a firmware failsafe thing due to difference between display panel and display firmware on the device. Battery even when damaged should not prevent boot if the device is connected to a power source.
This is just a wild guess, too. Try flashing older ftfs that may be free of these failsafes.
Click to expand...
Click to collapse
I was thinking more about the things you wrote....
What about if it is a failsafe that is written in the firmware. So that it does not matter what battery you put into it afterwards. That is just is a "WTF! HALT! BSOD " and that this is permanent untill you flash it (because you Clean the flash then).
I will follow your device right away. You gave me hope again
Update 19:26 GMT+1 : I can unlock the bootloader, I can boot in flash mode and fastboot mode, but only without battery.
With battery in it nothing works. Only the red light.
The only thing I can get on my screen is the battery logo, and only if the battery is not in it.
As soon as the battery is in it, nothing works.
I think the Z2 cannot boot without a battery?
update : 20:24 GMT+1 : I read that someone could not charge the phone i normal mode, but it worked in fastboot mode.
So i now booted the phone in fastboot (without battery) and then plugged in the battery while in fastboot mode. The system does not hang itself, so maybe it is charging? Maybe it is not...
I will reboot in an hour and see if I can notice any difference...
demesmaeker2 said:
Thanks for the good tip! Sounds like that could be something too.
I tried/will try it in this order :
1) original loader, load the phone for 2 days (no success)
2) wait three days without loader ( I read about others that were about to send their phones away and then they started working again)
3) change the battery with a new one (its on its way)
4) your idea, flash the phone
I was thinking about overheating sensors in the battery. Maybe it "says" to the phone "I will not charge myself. I am damaged" (because of the high temperature when using the hair dryer).
Maybe the battery has to forget that it once was too hot?
I also thought about that the phone does not want the battery because the battery reported the high temperature to the phone (and probably an unique ID).
Maybe the phone stores somewhere that that battery is a battery with problems and thus has a "ban list" somewhere?
Any way, thank you for the tip! As a final solution, I will do that.
If that does not work, I will probably look for another phone
---------- Post added at 05:44 PM ---------- Previous post was at 05:05 PM ----------
I was thinking more about the things you wrote....
What about if it is a failsafe that is written in the firmware. So that it does not matter what battery you put into it afterwards. That is just is a "WTF! HALT! BSOD " and that this is permanent untill you flash it (because you Clean the flash then).
I will follow your device right away. You gave me hope again
Update 19:26 GMT+1 : I can unlock the bootloader, I can boot in flash mode and fastboot mode, but only without battery.
With battery in it nothing works. Only the red light.
The only thing I can get on my screen is the battery logo, and only if the battery is not in it.
As soon as the battery is in it, nothing works.
I think the Z2 cannot boot without a battery?
update : 20:24 GMT+1 : I read that someone could not charge the phone i normal mode, but it worked in fastboot mode.
So i now booted the phone in fastboot (without battery) and then plugged in the battery while in fastboot mode. The system does not hang itself, so maybe it is charging? Maybe it is not...
I will reboot in an hour and see if I can notice any difference...
Click to expand...
Click to collapse
I sure hope you'll fix your Z2, this is indeed a weird issue. I can only add that I have repaired Z, Z1c and Z2 devices with heat gun and hair driers with battery inside and never had any issues with batteries, not even weakened capacity. Of course in your case it only remains to exchange the battery for a new one. If that fails then IDK, logic board is next, but that is just not economic anymore. Hope you sort this out, GL
5ageman said:
I sure hope you'll fix your Z2, this is indeed a weird issue. I can only add that I have repaired Z, Z1c and Z2 devices with heat gun and hair driers with battery inside and never had any issues with batteries, not even weakened capacity. Of course in your case it only remains to exchange the battery for a new one. If that fails then IDK, logic board is next, but that is just not economic anymore. Hope you sort this out, GL
Click to expand...
Click to collapse
It looks like it is another problem, maybe the logic board
I took out the battery again and measured it using a multimeter. It says 4.3 volts.
On the battery, it says 4.35 volts, so I assume the battery is fully loaded.
I am running out of tricks
demesmaeker2 said:
It looks like it is another problem, maybe the logic board
I took out the battery again and measured it using a multimeter. It says 4.3 volts.
On the battery, it says 4.35 volts, so I assume the battery is fully loaded.
I am running out of tricks
Click to expand...
Click to collapse
And now I changed the battery. Same problem.
Long story short: Some z2 owners around the world have changed the broken LCD screen and now they get the "red light of death" (I googled "changed lcd / digitizer" "red light" and found a few with the same problem. Not just Z2, but also Z and Z3
Its not the battery. Its not the screen (without battery ,you get the battery logo on the screen when you try to turn it on, so the LCD screen works).
The facts :
- 3 flashes when you try to turn on the phone without charging cable + battery in it
- i can lock and unlock the bootloader without problems
- nothing happens when you try to turn on the phone with charging cable in it. (The red light stays on)
- with the charging cable in the phone, you get the red charging light, but thats all.
- holding in on/off + volume up with the battery does give 3 vibrates, but nothing more
- without battery I can flash and fastboot. Without errors. Even the Sony tool can flash the phone.
- if I give fastboot commands I get three dots as an answer and then nothing more. It just hangs there
- a new battery does not solve the problem
- magnetic charger does not solve the problem
- original sony cable + sony charger does not solve the problem
- dock-loader from sony does not solve the problem
- flashing the phone with the oldest firmware and the newest does not solve the problem
- the battery is fully loaded and the voltage does not drop if I measure it during a "power on"
I guess I am out of luck It feels crappy to but a new phone. Not that I cannot afford it, but it feels like such a waste of money.
Another thing is that I really like my dedicated camera button, so I am kinda stuck to the brand too
If any one has any tips, or things I can try, please tell me!
After some more googling, I discovered that there is a japanese version of the Z2. It is called "Docomo SO-03F". This seems to be real Sony (so not a clone). This phone has its own firmware too! Maybe this is the problem? That people with the same problem are installing a Docomo screen in stead of a real Z2 screen?
Does any one know if this could be true? That the hardware is too different?
Just found out about an older post about this phone, but it does not specify about the hardware that much.
[email protected] u have the same problem!i disconected the baterry and i able to flash without baterry ...now then i conected cablu usb don't work i can't flash again.....you fix the problem?
intcpr said:
[email protected] u have the same problem!i disconected the baterry and i able to flash without baterry ...now then i conected cablu usb don't work i can't flash again.....you fix the problem?
Click to expand...
Click to collapse
No... I hate to say it, but no... :crying: :crying: :crying:
If you take out the battery again. Then you can flash again (holding the volume button down). But as soon as you put the battery back in, it is the same problem. It is so strange.
First I was concinved that it had to do with the battery, because if you take out the battery, and put the cable in the charger (not the computer!), then you get the battery logo on the screen. Do you have that too?
hello i flash 3X and is working! now i take out the battery but when put de charger led red is on....and when i try to flash on usb pc dont'reconize
---------- Post added at 05:36 PM ---------- Previous post was at 05:32 PM ----------
now when put de charger don't apper logo ... I was thinking to buy battery but after I read that you bought and you just do the battery and let it go .... I sell it for parts despite the fact that the first phone that really liked ..
intcpr said:
hello i flash 3X and is working! now i take out the battery but when put de charger led red is on....and when i try to flash on usb pc dont'reconize
---------- Post added at 05:36 PM ---------- Previous post was at 05:32 PM ----------
now when put de charger don't apper logo ... I was thinking to buy battery but after I read that you bought and you just do the battery and let it go .... I sell it for parts despite the fact that the first phone that really liked ..
Click to expand...
Click to collapse
What firmware did you flash? I flashed android 4.x (two different versions). Then I also got no battery logo.
I think the logo is included in the firmware.
When I flashed android 5 again, then the battery logo came back again. Of course, ONLY when the battery was not in the phone. Else I only get the red light.
Android5.1.1 but now when try to flash no reaction when plug the usb cable. Is dead
intcpr said:
Android5.1.1 but now when try to flash no reaction when plug the usb cable. Is dead
Click to expand...
Click to collapse
Try this :
1) take out battery
2) start flashtool (download the latest)
3) hold down powerbutton and then plug the cable in the computer
4) Does it say device connected then? Then you can probably flash it using Flashtool
I assume that you have all the correct drivers (ADB drivers) installed and that you flashed before using Flashtool
Greetz,
Demesmaeker
Don't working ia dead but led red is on
---------- Post added at 07:54 PM ---------- Previous post was at 07:34 PM ----------
you buy a new baterry?
Yes. that made no difference
I think this is a firmware compatibility problem. The screen is not compatible with the phone and thus creating a kernel panic on startup. But,Im just guessing. I am sure I did not destroy anything in the phone when changing the screen. I was extremely careful.
Did you also buy it from China. Does it have the Sony Logo on it? (mine does).
There are also version with the sony logo on it, but there is some black stuff over it, that you have to scrape off. Mine was not like that.
Related
Hello!
I purchased this device some time ago and did not modify it in anyway (no rooting/flashing etc), just a stock device. After leaving it just laying around for about a month I tried to turn it on again and nothing happened. Connecting it to USB or wall charger just makes the power button red led blink intermediately.
Ive tried:
Reset button
Hard reset (vol up+vol down+power button)
Leaving it to charge overnight from the wall charger
Leaving it to charge overnight from USB
Singing to it
Specifics:
Stock firmware
Viewsonic VPAD7
Model#: VS13761
Any help would be appreciated (even as mundane as saying "its hardware is fried") etc, just want some clarify on what happened if their is no way to fix it.
Thank you in advance
Same problem
Even My Vpad 7 is having the same problem.
Can anyone shed light to the above problem?
Puia
Let's start with here -
http://forum.xda-developers.com/showthread.php?t=1015005 - post #6
Can you hold the "Volumn" Down button while pressing the Power button to get into FTM mode (diagnostic screen) - make a note of the basic information it displayed.
To exit/reset - you might need to use a small pin to press the Reset button at the lower bottom (left) of the device to get it to reboot.
If it does not reboot, power down or shut-off, does it stay on with only the RED LED flashing.
Probably the battery is dead or dying..
i am in a similar situation.. i can only see a Red flashing LED. the tab wont reboot, go into diagnostics or respond to any plethora of button press combinations..
For those of you reporting problems with your Vpad7 - apparently not responding & only flashing red LED, can you access/read/verify your device's FTM status? Does it show any sort of boot-up sequence at all (the 3 birds being the common one for official Viewsonic Vpad 7's?
Please re-check your mSD card - you have one inserted right? properly formatted and not corrupted, readable as a USB drive when taken out & connected to a PC? Try removing any Sim card or vice versa, insert one and try to boot it up? Has the battery being charged to 100% (using the stock 2.0A charger - typically take 4 to 8 hours)?
Since it's NOT rooted and has no custom recovery installed (right !) - even a successful effort to boot into Recovery Mode won't help at all, but, it will help if you can get into bootloader mode.
Still following ... if everything checked out up to now, it's very likely that your ROM was corrupted/damaged and you need to reflash the "correct" factory ROM (RUU or *.nb0 file) using the factory utility - as discussed in the referenced link .
If you think you know what you are doing and dare to try a DIY rescue by flashing it all over (got nothing to lose anyway, it's a brick - paperweight at this point) - see if you can access the viewsonic website and download the files directly ... if you cannot download/access the files, please post here or PM for possible alternatives from my private collection now in cloud storage (it's geared mostly for newer/ITE devices, however, but not all of it) Please be specfic with your model's firmware/build & other info as shown under FTM or see your factory carton's box for the technical info.
If it's under warranty, by all means, contact support & get RMA to return it for repair/exchange - in 2 to 3 weeks (4 ?) you will have it back in working order, good as new - no fuzz, no worries & the "brick" can fly in android again.
If none of these apply, another possibility for the advanced users daring to play in a "what do I get to lose at this point situation" - to try to connect it to PC and run ADB using terminal emulator, to try to bring it back to life or at least restart/reboot it. http://forum.xda-developers.com/showthread.php?t=1229804
Good luck & I will check back soon ...
Unfortunately, mine will respond to none of these. nothing shows up on the computer when i plug it in.. not a sound, nothing. i may try booting up my old linux partition and see what /var/log/messages has to say when i plug it in..
i have an inkling that the battery has completely died though.. its a smart battery so has a PCB attached to it. if this has gone then i doubt the tab will power up.. unfortunately, replacement batterys arent easy to source..
i will let you know how i get on with it later on tonight when the GF and Kid have gone to sleep so i have some peace to potter around the house..
cheers for all your help my friend!
Today I plugged it in to my computer.
There was a white flash on the screen then same thing happened again.
The red light will blink sometimes or it will stay on as if it is charging but nothing is showing up on the screen.
Does anyone know how to open up the viewpad 7 or a manual on how to change the battery?
Puia
Gtea said:
Today I plugged it in to my computer.
There was a white flash on the screen then same thing happened again.
The red light will blink sometimes or it will stay on as if it is charging but nothing is showing up on the screen.
Does anyone know how to open up the viewpad 7 or a manual on how to change the battery?
Puia
Click to expand...
Click to collapse
removing the back is rather simple.. run a credit card or any thin plastic along the edge starting at any corner.
good luck finding a replacement battery though.. i have searched high and low and cant find then for sale to the public that isn't a bulk order anywhere.
if you do find somewhere, please let me know..
Mine is an olivepad but I think the viewpad 7 and olivepad are the same hardware wise. (I may be wrong).
Maybe we can exchange the battery with another with the same voltage rating. And maybe higher mAh rating for better battery life?
It's already bricked so I don't mind experimenting a bit.
Here are some pictures I snapped.
vpad7 wont turn on
speakfor said:
Hello!
I purchased this device some time ago and did not modify it in anyway (no rooting/flashing etc), just a stock device. After leaving it just laying around for about a month I tried to turn it on again and nothing happened. Connecting it to USB or wall charger just makes the power button red led blink intermediately.
Ive tried:
Reset button
Hard reset (vol up+vol down+power button)
Leaving it to charge overnight from the wall charger
Leaving it to charge overnight from USB
Singing to it
Specifics:
Stock firmware
Viewsonic VPAD7
Model#: VS13761
Any help would be appreciated (even as mundane as saying "its hardware is fried") etc, just want some clarify on what happened if their is no way to fix it.
Thank you in advance
Click to expand...
Click to collapse
Open vpad7. Remove the only screw top near sim/micro sd. Remove Batt. connector for 15-30 seconds, put it back turn on and charge fully. (Its bcoz of fully discharged batt.)
Thanks
NAUMAN
---------- Post added at 11:48 PM ---------- Previous post was at 11:40 PM ----------
Gtea said:
Even My Vpad 7 is having the same problem.
Can anyone shed light to the above problem?
Puia
Click to expand...
Click to collapse
Open vpad7. Remove the only screw top near sim/micro sd. Remove Batt. connector for 15-30 seconds, put it back turn on and charge fully. (Its bcoz of fully discharged batt.)
Thanks
NAUMAN
Viewpad 7 won't charge battery and power on
Hi
Seems like it might be enough to just parallel connect a phone battery, with 3,7v to the battery PCB for a short period, to be able to charge the battery again.
Mogens
I disconnected the battery for 30s and assembled it back again, but the red flashing continues and it can't be turned on or charged.
Battery is over discharged.
1 - Open it and disconnect battery connector on mother board and reconnect and try to charge. If the battery percentage appears on screen appears and moving means its charging. Charge for few hours then turn on.
2 - Disconnect battery connector and charge it for 5 mins by using any 5V 1A power source for any mobile. Then put back battery connector and charge using original charger. If no other 5v 1 A source available, you have to cut the wire of same original charger and use +ve and -ve.
Regards
Nauman
I have read the similar threads, unfortunately they do not seem to help.
Relevant information:
ROM: Cyanogenmod 9 2nd June 2012 Nightly
Kernel: Siyah 3.2.8
What happened: I was playing Rage of Bahamut (a game, nothing too intensive) when my screen appeared to dim and get stuck on the current image. I could press the home button and the screen will turn off, pressing home button 4 times triggered the inverted colors mode but I could not get to the homescreen itself, so I turned off the phone. When I tried to turn it on again it won't turn on.
What I tried:
Swapping out with a full battery - Doesn't work
Booting with USB Jig - Doesn't work
Plugging in to PC to see if USB is recognized - Doesn't work
Trying Recovery and Download key combinations - Doesn't work
I'm utterly at a loss as my phone appeared to be working fine, and from what I read the SGS2 is unbrickable. However I have been reading on the Siyah thread that 3.2.8 has a lot of issues and I really hope that I'm not experiencing another hard brick like what happened with Siyah 3.2.1RC6 (IIRC).
Thanks for reading! Hope someone has a suggestion.
Note: Interestingly, when I plug in the charging cable after a while the back of the phone gets warm; However still nothing happens when I attempt to turn it on. No response, no vibration, no soft key lights no nothing.
Service center (JTAG repairer might well say unfixable). No signs of life, no download mode, no jig. Dead phone.
MistahBungle said:
Service center (JTAG repairer might well say unfixable). No signs of life, no download mode, no jig. Dead phone.
Click to expand...
Click to collapse
I was kinda resigned to that. Just hoping one of you guys might have an obscure method to bring the phone back to life.
Thanks for your kind reply!
U cant turn the phone on, your pc doesnt recognize it, you cant go into recovery or download mode, you cant use USB jig. Oh boy, you're in deep trouble. Maybe the charge of the phone might be finished? U sure the other battery you placed was fully charged? I have never seen someone whose phone doesn't turn on at all, and even the pc doesnt recognize!
---------- Post added at 01:42 AM ---------- Previous post was at 01:31 AM ----------
Dude, i dont even think this is a problem related to the software. I think its probably the hardware. Maybe the battery case has some defect? You should go see an expert for this.
xxxgladi8orxxx said:
U cant turn the phone on, your pc doesnt recognize it, you cant go into recovery or download mode, you cant use USB jig. Oh boy, you're in deep trouble. Maybe the charge of the phone might be finished? U sure the other battery you placed was fully charged? I have never seen someone whose phone doesn't turn on at all, and even the pc doesnt recognize!
---------- Post added at 01:42 AM ---------- Previous post was at 01:31 AM ----------
Dude, i dont even think this is a problem related to the software. I think its probably the hardware. Maybe the battery case has some defect? You should go see an expert for this.
Click to expand...
Click to collapse
Indeed I suspect it's hardware also. The strange thing is, I took the battery out to charge it in an external charger, and left the phone battery-less while I slept. When I woke up, I put the battery in and tried to turn on the phone. No luck. Strange thing was that after a while the phone felt warm.
Device Xperia X10i, Unlocked Boot Loader, Rooted, Installed Jelly bean Rom of Feralab. Device worked perfectly on it. Since yesterday, after waking up, found my device bricked. Symptoms displayed after device got bricked :
a) If connected to wall charger with battery present, device only displays green light for 15 to 20 seconds max and then green light goes off. Then no activity in the whole device.
b) If connected to wall charger with battery absent, device again shows green light (with battery absent that is).
c) Tried SEUS, Answer : After the complete successful operation : Nada Nothing !
d) Tried Flash Tool, Still Nada. Tried flashing Xperia Stock Rom : Replaced System.sin , Header.sin and what not etc. "Even checked No Final Matchup" while flashing. Answer : Nada. !
e) Stock Used is "X10i_3.0.1.G.0.75_CUST-IN_GENERIC_1237-0692.ftf" flashed it. Still Nada ! However, no errors occurred while flashing.
f) Device when trying to switch on, displays green light blinked once, then vibrates and then just goes simply Naaadaa !!!
Nothing at all. Please help. If this helps, I am attaching log file of flashing device via flash tool. Man, device is just bricked. Answer and help appreciated . Thanks in advance.
Since I can't attach link to external log file on paste bin : here's I have uploaded the log file.
Update : Since I was on Fera Lab's Jb earlier, I want to notify that my "Unknown Sources and Debugging" was not checked in phone settings. It wasn't on and now that its bricked, I dunno whether it will make any difference or not ? In bricked state, with "Unknown Sources and Debugging" not checked. Can't get device to on, blinks one time green signal and then vibrates and nothing afterwards !
Update Number 2 : Hey, after completely keeping aside the battery for more than 24 hours, I connected the device to external wall DC supply (while battery was removed and never inserted after the 24 hours interval that is). After connecting the device to DC wall supply, it gave me the same response, flicked and showed green light and then vibrated and then nothing ! F1 anyone. !!!
Update Number 3 : http://talk.sonymobile.com/t5/Xperi...on-Flash-mode-even-when-plugin-to/td-p/273134
Just Googled my problem and came to this link. I can very much relate to the link although, His device was water locked, (there was this small white rectangle, if it is water damaged then it will be red) Surprisingly, his device which was water damaged shows the same symptom as mine. So, i checked mine, but the sticker or white rectangle for moist / humidity checker is white totally. So I guess it can't be water damaged, although, it showed the same symptoms !
Update Number 4: Since green Light was always On, I thought what if its in flash mode and much to my surprise, the device is in Flash Mode when I switch it on, how I found out : While flashing via SEUS, I didnt press the back key and the device got connected in flash mode by default, So i narrowed down the problem to something that : My device boots to Flash mode and not as it normally should ? Is it a mother board problem ? Can it be cured ? (god no please not mother board problem) So ? Any thoughts anyone to make it come out f the flash mode. ?
C] Tried SEUS, Answer : After the complete successful operation : Nada Nothing !
after the Successful Operation did you unplug the phone and tried to turn it on?
After the Successful SE Update Services was successful my phone didn't start, then i removed battery and reconnected, power on and works fine.
search in forums for Dr Goodvibes his suggestions did help me.
ronaksworld said:
C] Tried SEUS, Answer : After the complete successful operation : Nada Nothing !
after the Successful Operation did you unplug the phone and tried to turn it on?
After the Successful SE Update Services was successful my phone didn't start, then i removed battery and reconnected, power on and works fine.
search in forums for Dr Goodvibes his suggestions did help me.
Click to expand...
Click to collapse
well thanks. at least some one replied. can you direct me to a specific url u have in mind regarding my query. also i have updated the query, kindly see the update. as for SEUS update Yes why indeed, i did that. Sorry, nothing came up. thanks for the reply though. gives me hope.
Message this guy Dr Goodvibes http://forum.xda-developers.com/member.php?u=4375132
katctv Lord
ronaksworld said:
Message this guy Dr Goodvibes http://forum.xda-developers.com/member.php?u=4375132
Click to expand...
Click to collapse
thanks. will do.
asciisort said:
Device Xperia X10i, Locked Boot Loader, Rooted, Installed Jelly bean Rom of Feralab. Device worked perfectly on it. Since yesterday, after waking up, found my device bricked. Symptoms displayed after device got bricked :
Click to expand...
Click to collapse
Your phone indicates an unlocked bootloader, just for your information.
What's the thoughts on the battery? Was it in a good service state?
Take the battery out of the phone for 48 hours and then put it back in the phone and power the phone on.
The green light for a few seconds indicates the phone is attempting, or in a recovery state.
Your phone may have just had a 'moment' and has a "locked instruction", that just needs to be cleared with no power applied to the chipset.
This has worked for others and is more voodoo than science, but worth a try.
Dr Goodvibes said:
Your phone indicates an unlocked bootloader, just for your information.
What's the thoughts on the battery? Was it in a good service state?
Take the battery out of the phone for 48 hours and then put it back in the phone and power the phone on.
The green light for a few seconds indicates the phone is attempting, or in a recovery state.
Your phone may have just had a 'moment' and has a "locked instruction", that just needs to be cleared with no power applied to the chipset.
This has worked for others and is more voodoo than science, but worth a try.
Click to expand...
Click to collapse
Oh thanks for the update about the boot loader state. i definitely be keeping it apart for 48 hours and will update you regarding the same. thanks for the reply, you know i love this set of mine and your precious replies gives me hope.
Regarding the battery state, i guess it was okay, gave me a 1 day backup on the phone. So i guess it was in a kinda okay service state. though am not sure whether its fully charged or not. i don't actually know the power state / current charge level of the battery though coz i found the device bricked. if there's anything you can suggest, will be really helpful. though thanks for the information.
So I waited and waited for some more time, couldn't wait any longer for the 48 hours duration. Does t has to be 2 days ? I just wanted to bring my device back to life. Though, after giving up shortly after 12 + hours, I flashed it again, it did successfully, although, nothing even now, green light followed by a vibration and then boom. nothing ! f1 help needed ? btw, does it has to be 2 days?
I would have placed the battery back in the phone and pressed the power button and see if it booted, or allowed you to get to CWM Recovery with blue light or xRecovery(if installed).
One day, one week. How long does residual power remain in a circuit board to hold the current date/time before resetting?
Maybe buy a cheap BST-41 1500mAh battery for the XPERIA X10 and try that. Could be just a bad battery.
You could check the battery with a multimeter and see if it still has a charge.
My knowledge base stops at this point as I have no experience beyond this.
Good luck.
Dr Goodvibes said:
I would have placed the battery back in the phone and pressed the power button and see if it booted, or allowed you to get to CWM Recovery with blue light or xRecovery(if installed).
One day, one week. How long does residual power remain in a circuit board to hold the current date/time before resetting?
Maybe buy a cheap BST-41 1500mAh battery for the XPERIA X10 and try that. Could be just a bad battery.
You could check the battery with a multimeter and see if it still has a charge.
My knowledge base stops at this point as I have no experience beyond this.
Good luck.
Click to expand...
Click to collapse
Thanks Dr. Goodvibes, I definitely will keep you posted. Though, when I plugged the battery in, first I did check, nuthing ! green light + vibration. and then it goes blank. I installed my feralab jb rom via xRecovery so, yes it is there (installed) but afterwards I have flashed the stock via SEUS so i guess even xRecovery is gone now. I am not for sure. Though it was installed earlier. Right now I am thinking of keeping it apart till the time i found a new battery, it can be even 2 + days. Even 1 week. I will wait for a week now. Thanks for letting me know all about this. Keep me posted.
Dr Goodvibes said:
Your phone indicates an unlocked bootloader, just for your information.
What's the thoughts on the battery? Was it in a good service state?
Take the battery out of the phone for 48 hours and then put it back in the phone and power the phone on.
The green light for a few seconds indicates the phone is attempting, or in a recovery state.
Your phone may have just had a 'moment' and has a "locked instruction", that just needs to be cleared with no power applied to the chipset.
This has worked for others and is more voodoo than science, but worth a try.
Click to expand...
Click to collapse
Update Number 2 : Hey, after completely keeping aside the battery for more than 24 hours, I connected the device to external wall DC supply (while battery was removed and never inserted after the 24 hours interval that is). After connecting the device to DC wall supply, it gave me the same response, flicked and showed green light and then vibrated and then nothing ! F1 !!!
Dr Goodvibes said:
Your phone indicates an unlocked bootloader, just for your information.
What's the thoughts on the battery? Was it in a good service state?
Take the battery out of the phone for 48 hours and then put it back in the phone and power the phone on.
The green light for a few seconds indicates the phone is attempting, or in a recovery state.
Your phone may have just had a 'moment' and has a "locked instruction", that just needs to be cleared with no power applied to the chipset.
This has worked for others and is more voodoo than science, but worth a try.
Click to expand...
Click to collapse
Update 3: http://talk.sonymobile.com/t5/Xperi...on-Flash-mode-even-when-plugin-to/td-p/273134
Just Googled my problem and came to this link. I can very much relate to the link although, His device was water locked, (there was this small white rectangle, if it is water damaged then it will be red) Surprisingly, his device which was water damaged shows the same symptom as mine. So, i checked mine, but the sticker or white rectangle for moist / humidity checker is white totally. So I guess it can't be water damaged, although, it showed the same symptoms !
Dr Goodvibes said:
I would have placed the battery back in the phone and pressed the power button and see if it booted, or allowed you to get to CWM Recovery with blue light or xRecovery(if installed).
One day, one week. How long does residual power remain in a circuit board to hold the current date/time before resetting?
Maybe buy a cheap BST-41 1500mAh battery for the XPERIA X10 and try that. Could be just a bad battery.
You could check the battery with a multimeter and see if it still has a charge.
My knowledge base stops at this point as I have no experience beyond this.
Good luck.
Click to expand...
Click to collapse
Update Number 4: Since green Light was always On, I thought what if its in flash mode and much to my surprise, the device is in Flash Mode when I switch it on, how I found out : While flashing via SEUS, I didnt press the back key and the device got connected in flash mode by default, So i narrowed down the problem to something that : My device boots to Flash mode and not as it normally should ? Is it a mother board problem ? Can it be cured ? (god no please not mother board problem) So ? Any thoughts anyone to make it come out f the flash mode. ?
Changed battery. Nothing changed.
Before I started this process, I was able to turn the phone on, hear the startup sounds, and charge it, no problem.
Yesterday I changed my cracked LCD (and digitizer) with one of these witrigs .com/oem-lcd-with-digitizer-for-sony-xperia-z2 (I'm not allowed to post links)
Followed the instructions provided by witrigs.
However, after having put it together again, when I try to turn it on all I get is 3 red blinks. (This would indicate low / empty battery, right?)
So I connected it to the charger (tried both wallsocket, and USB from two different computer, and different cables.) and all it gives me is a red light.
Normally, this would mean that it's charging, as far as I know, but it stays like that for hours, without any changes. So I was puzzled by this, googled to no avail.
I can not get it in flashmode, nor fastboot mode. However, here is the interesting part. When I disconnect the battery from the back and connect the phone to a charger (or USB from PC) the screen lights up, and shows me the charging animation.
In addition to this, when the battery is disconnected, I can get it into fastboot (Blue led, if I've read correct, I can not get into this with the battery connected.)
With this information, and my lack of real knowledge about how this technology works, I assumed the battery was broken, so to test that a bit further, I checked it with a multimeter.
It's currently showing 4.2v. I don't have another battery I can try with as of now, nor do I have other readings from other batteries. Maybe some of you do.
Anyway, have any of you encountered anything like this before? and or have any suggestions as to what I can / should test or try next? - I'm running out of ideas. (I will buy a new battery when I have money, but it probably will not be here in 5-8 weeks, due to when I get money and shippingtime.)
Thanks in advance for your time, and I'm terribly sorry if this has been talked about before. I searched, but maybe my searching skills are bad, as I could not find anything like this.
Please help
please help guys i dont know what is that
I have read some similar tread, not involving the screen replacement though, try to change the battery and it'll be up and running again. Keep us updated.
or if you have a multimeter, try to test the battery voltage and see if it's dead.
4.2 V means it's fully charged.It's either that your battery was severely damaged and the safety circuits inside don't let you charge/use it further or some other part of the phone is damaged.
Dear all,
I hope there is someone here, who can help me with my issue. I lost my hope after trying almost everything found in the internet.
So here is the problem: I was using my phone as a navigation in my car. The battery was low, so I used the car charger and kept it plugged, while driving. I observed, that even though I was charging my phone via car charger, the battery continued to get low and finally the phone turned off. After reaching home, I plugged my phone with an original quick charger from Xiaomi. Unfortunately I was not able to charge my phone and it got stuck in a bootloop, with a phone showing Mi Logo, vibrating and switching off repeatedly.
When I connect the phone with the laptop, it is shortly recognized (when it is booting) and then disconnected and again and again. I can go to fastboot mode but I cannot flash my phone using MiFlash, because I get an error: Failed. Low battery.
Does anyone know the solution? I would really appreciate any help.
adka said:
Dear all,
I hope there is someone here, who can help me with my issue. I lost my hope after trying almost everything found in the internet.
So here is the problem: I was using my phone as a navigation in my car. The battery was low, so I used the car charger and kept it plugged, while driving. I observed, that even though I was charging my phone via car charger, the battery continued to get low and finally the phone turned off. After reaching home, I plugged my phone with an original quick charger from Xiaomi. Unfortunately I was not able to charge my phone and it got stuck in a bootloop, with a phone showing Mi Logo, vibrating and switching off repeatedly.
When I connect the phone with the laptop, it is shortly recognized (when it is booting) and then disconnected and again and again. I can go to fastboot mode but I cannot flash my phone using MiFlash, because I get an error: Failed. Low battery.
Does anyone know the solution? I would really appreciate any help.
Click to expand...
Click to collapse
Are you on miui or a custom rom?
I think I know what problem you are facing, your device's battery is actually drained of all the power, like it empty. So drained that it doesn't even have the energy to turn on the phone to get power. I had a lenovo a560 last year, and it had the same problem, so what i had to do was either leave it for charging and pray that it begins charging (and sometimes after 3 or 4 hours the battery started charging as normal when it got 1% battery), or the second method was that i took the removable battery out and charged it externally using wires. The second method worked since the battery got enough power, to keep the phone on during charging.
Now the problem is that redmi note 4 doesn't have a removable battery, so either you can leave the phone for charging, and actually forget about it for a day, or the only other thing is that you have to visit a service center.
Not joking about the charging process but that is the only thing you can do.
---------- Post added at 06:15 PM ---------- Previous post was at 06:12 PM ----------
adka said:
Dear all,
I hope there is someone here, who can help me with my issue. I lost my hope after trying almost everything found in the internet.
So here is the problem: I was using my phone as a navigation in my car. The battery was low, so I used the car charger and kept it plugged, while driving. I observed, that even though I was charging my phone via car charger, the battery continued to get low and finally the phone turned off. After reaching home, I plugged my phone with an original quick charger from Xiaomi. Unfortunately I was not able to charge my phone and it got stuck in a bootloop, with a phone showing Mi Logo, vibrating and switching off repeatedly.
When I connect the phone with the laptop, it is shortly recognized (when it is booting) and then disconnected and again and again. I can go to fastboot mode but I cannot flash my phone using MiFlash, because I get an error: Failed. Low battery.
Does anyone know the solution? I would really appreciate any help.
Click to expand...
Click to collapse
But wait, if the phone is able to stay in fastboot mode, why not charge it there? Like just open fastboot mode, and connect the charger. It will atleast charge some percent.
MyNameIsRage said:
Are you on miui or a custom rom?
I think I know what problem you are facing, your device's battery is actually drained of all the power, like it empty. So drained that it doesn't even have the energy to turn on the phone to get power. I had a lenovo a560 last year, and it had the same problem, so what i had to do was either leave it for charging and pray that it begins charging (and sometimes after 3 or 4 hours the battery started charging as normal when it got 1% battery), or the second method was that i took the removable battery out and charged it externally using wires. The second method worked since the battery got enough power, to keep the phone on during charging.
Now the problem is that redmi note 4 doesn't have a removable battery, so either you can leave the phone for charging, and actually forget about it for a day, or the only other thing is that you have to visit a service center.
Not joking about the charging process but that is the only thing you can do.
---------- Post added at 06:15 PM ---------- Previous post was at 06:12 PM ----------
But wait, if the phone is able to stay in fastboot mode, why not charge it there? Like just open fastboot mode, and connect the charger. It will atleast charge some percent.
Click to expand...
Click to collapse
Hi, i thought about it before, but the phone was staying in fastboot mode for a very short time, to short to charge any resonable amount of power, and kept rebooting quickly. I left the phone for two days without trying to fix it and I tried just now to go into fastboot and try to charge. It stays now for quite a time in fastboot so I will keep my fingers crossed that I will be able to charge. I will update here if it was a success or not. Meanwhile, thank you for all your ideas! Lets see what happens...
adka said:
Hi, i thought about it before, but the phone was staying in fastboot mode for a very short time, to short to charge any resonable amount of power, and kept rebooting quickly. I left the phone for two days without trying to fix it and I tried just now to go into fastboot and try to charge. It stays now for quite a time in fastboot so I will keep my fingers crossed that I will be able to charge. I will update here if it was a success or not. Meanwhile, thank you for all your ideas! Lets see what happens...
Click to expand...
Click to collapse
Best of luck brother.
MyNameIsRage said:
Best of luck brother.
Click to expand...
Click to collapse
Unfortunately, no good results. I kept my phone in fastboot mode multiple times, but I was not able to charge my phone. Turning off fastboot is only causing phone to stuck in bootloop.
I also had an impression, that the phone was not warm at the back, where the battery is. Now I am starting to think that the battery is completely dead and I have to change it. But how is it even possible, that after 8 MONTHS the battery is completely f***ed up?
Can I somehow check the state of the battery? I would like to be sure, that there is no way to bring the battery back to life and I really have to go somewhere to change it. I am really reluctant to have a battery from some unknown company. :crying:
adka said:
Unfortunately, no good results. I kept my phone in fastboot mode multiple times, but I was not able to charge my phone. Turning off fastboot is only causing phone to stuck in bootloop.
I also had an impression, that the phone was not warm at the back, where the battery is. Now I am starting to think that the battery is completely dead and I have to change it. But how is it even possible, that after 8 MONTHS the battery is completely f***ed up?
Can I somehow check the state of the battery? I would like to be sure, that there is no way to bring the battery back to life and I really have to go somewhere to change it. I am really reluctant to have a battery from some unknown company. :crying:
Click to expand...
Click to collapse
Are you rooted?
This is really a kernel fault man, I had the same issues with mediatek Chipsets before, but you are saying in "8 months", so that means you are well covered in warranty. You can send an e-mail to Xiaomi customer care or visit a service centre with the phone bill. I am pretty sure a faulty battery or such happening can be covered using warranty, plus I would suggest NOT to get the battery changed from a 3rd party store.
MyNameIsRage said:
Are you rooted?
This is really a kernel fault man, I had the same issues with mediatek Chipsets before, but you are saying in "8 months", so that means you are well covered in warranty. You can send an e-mail to Xiaomi customer care or visit a service centre with the phone bill. I am pretty sure a faulty battery or such happening can be covered using warranty, plus I would suggest NOT to get the battery changed from a 3rd party store.
Click to expand...
Click to collapse
Sorry, I actually don't know much about the phones, so I don't know what 'rooted' means. I never did anything with my phone, software or whatever more than required.
With the warranty there is a different problem in my case: I bought my phone in China when I was there for my business trip and I live in Europe (yeah I know, my own fault, I should have bought it at home). I have bill and everything but I guess it will not help. Besides, Xiaomi gives 6 months warranty for battery (in case this is really the battery).
adka said:
Sorry, I actually don't know much about the phones, so I don't know what 'rooted' means. I never did anything with my phone, software or whatever more than required.
With the warranty there is a different problem in my case: I bought my phone in China when I was there for my business trip and I live in Europe (yeah I know, my own fault, I should have bought it at home). I have bill and everything but I guess it will not help. Besides, Xiaomi gives 6 months warranty for battery (in case this is really the battery).
Click to expand...
Click to collapse
Knowing that you are not rooted is a positive thing when regarding the warranty, ok so here is the thing which you should do. But first of all please stop the battery charging process, since this can now be harmful and can damage the components. Ok so here's what you should do -
[email protected]
Send an email to that address regarding the battery problem. And provide the details including about the drainage of battery, and the methods which you tried. Plus attach the bill also. It doesn't really matter where you bought it, because the bill serves as to give them information that the device you own is actually bought by you, and it contains details about device like IMEI etc. If they respond and say that you can send your device to them, (in this case they will give you an address) you should do that. If they say they cannot help it, then consider getting a repair from a local shop.
I just checked my phone's inside and found out that you cannot externally charge the battery, so this means you need a repair, unfortunately.
Before ending this reply I just wanna clear the fact that,
The battery isn't damaged, it just isn't able to get power,(here it is because of the device) this means that if somehow some energy can be provided to the battery, the battery need not be replaced.
I wish you luck , may you be able to fix your phone again.
adka said:
Dear all,
I hope there is someone here, who can help me with my issue. I lost my hope after trying almost everything found in the internet.
So here is the problem: I was using my phone as a navigation in my car. The battery was low, so I used the car charger and kept it plugged, while driving. I observed, that even though I was charging my phone via car charger, the battery continued to get low and finally the phone turned off. After reaching home, I plugged my phone with an original quick charger from Xiaomi. Unfortunately I was not able to charge my phone and it got stuck in a bootloop, with a phone showing Mi Logo, vibrating and switching off repeatedly.
When I connect the phone with the laptop, it is shortly recognized (when it is booting) and then disconnected and again and again. I can go to fastboot mode but I cannot flash my phone using MiFlash, because I get an error: Failed. Low battery.
Does anyone know the solution? I would really appreciate any help.
Click to expand...
Click to collapse
Any aftermath? What happened?
MyNameIsRage said:
Any aftermath? What happened?
Click to expand...
Click to collapse
I am still waiting for the response from Global Service. If nothing happens, I will go to local 'mi center', where I know they can repair xiaomi phones, but not on warranty.
Apart from that, phone is still dead, but I have not tried yet anything else. I found this: https://xiaomifirmware.com/guides-and-tips/fix-bootloop-redmi-note-4-mtk/
But I am not sure, if this should work. Anyone have tried?
adka said:
I am still waiting for the response from Global Service. If nothing happens, I will go to local 'mi center', where I know they can repair xiaomi phones, but not on warranty.
Apart from that, phone is still dead, but I have not tried yet anything else. I found this: https://xiaomifirmware.com/guides-and-tips/fix-bootloop-redmi-note-4-mtk/
But I am not sure, if this should work. Anyone have tried?
Click to expand...
Click to collapse
That post shows you how to enter deep flash mode. You can give it a try. If that works, Voila, If it does't better go the service center.
So I got the response from service (it took them ages). Maybe it will help someone:
With respect to your concern, I would request you to please follow some troubleshooting steps in order to resolve your issue:
Try to charge your device with another compatible charger for at least 30 minutes
Long press power button for 10-15 seconds and check whether the device is responding or not
If the issue persists please follow the below mentioned steps:
Note: The below mentioned procedure deletes the data you have on your phone.
Sign Out from your Mi Account :-
Go to the settings
Select Mi Account
Confirm to Sign out
Create a backup : -
Go to the settings
Go to the additional settings
Go to the backup and reset
Go to the local backup
Go to the backup
Select system and apps
Then, select backup so that a backup would be created
After creating the backup, you can find your backup file through the below mentioned steps:
Go to the "explorer"
Select "storage" option
Then, "MIUI"
You will get a "backup" option
Select "all backup"
In this folder, you will be able to see your "backup file"
(Note :- Please save the backup file on your PC/Laptop so that your important data would be prevented)
Factory data reset :-
Go to the settings
Go to the additional settings
Go to the backup and reset
Tap on factory data reset
In order to restore your backup file, please follow the below mentioned steps:
Go to the settings
Go to the additional settings
Go to the backup and reset
Go to the local backup
After that, select your "backup file"
Then, "restore" it
I did not try anything from this yet, I have my phone at home, but maybe it will help some of you.
btw. the previous method from the link (deep flash mode) is not working for me.
PEOPLE I FIXED MY PHONE!!! I used again and again this method, which I have already posted before: https://xiaomifirmware.com/guides-and-tips/fix-bootloop-redmi-note-4-mtk/
I didn't work at the beginning, so I left my phone and actually wanted to wait till I go back home to my country for the weekend and visit Xiaomi service, but FINALLY IT WORKED!!! I cannot explained what was the reason that this time it clicked. My phone was completely drained, left for long time without touching. As a result I have a battery icon now and it is charging, no bootloop anymore. Hope this method would help someone. Be patient and try multiple times!
So it is not software problem causing the bootloop
So it is not a software, but only hardware - the battery - as the only problem in this case. I am facing a very similar case with my Redmi Note 4x Mediatek (4/64 Memory) just starting Friday morning (9Feb). I thought it was charging overnight, but in the morning found the power totally drained, and stucked not be able to recharge for hours. This phone is still under warranty (9month use) but ridiculously the Official Service Agent said they need up to 40days to fix this phone. This is worst experience comparing to other phones I ever had.