[Q] Black screen after update, please help - Galaxy S II Q&A, Help & Troubleshooting

ok so i was running 4.0.3 with no problem until i decided to update to 4.1.2, so after updated finished with no errors i booted the device
the galaxy s2 logo appears the BLACK SCREEN
no boot animation
what i have tried
return to 4.0.3
wipe data
use custom recovery that matches the os version
us custom recovery to format all the partitions
flash using pit file
different version of odin
and thats pretty much all
now even when i return to 4.0.3 it stil wont boot, please help

If the phone won't boot & PC/phone don't recognise each other in Odin, you're pretty much boned. Possibly JTAG, if not service centre (or local mobile shop if no warranty).

it goes into download mode, and recovery, and it boots up, but after the SGS2 logo i get a black screen on any firmware, even gingerbread
and i can still flash using odin and cwm

If it were me, I'd keep trying Odin flashes (even trying random stock roms); often in these situations the first 6 flashes don't work but the 15th actually fixes the problem (I'm using these numbers as an example) for whatever reason.
That's the only way you're fixing it, unless the NAND is borked, which you won't be able to fix. Try Hopper8's 'Odin won't work' thread, there's stuff in there which might help.

Simply_Android said:
ok so i was running 4.0.3 with no problem until i decided to update to 4.1.2, so after updated finished with no errors i booted the device
the galaxy s2 logo appears the BLACK SCREEN
no boot animation
what i have tried
return to 4.0.3
wipe data
use custom recovery that matches the os version
us custom recovery to format all the partitions
flash using pit file
different version of odin
and thats pretty much all
now even when i return to 4.0.3 it stil wont boot, please help
Click to expand...
Click to collapse
Hey this is exactly what happened to my phone, I flased stock 4.1.2, it was working fine but somehow freezing randomly. So I installed latest cwm hoping to fix the freezing problem, the boot animation won't show up after the logo, though I can hear from the speaker sound of the boot animation, and the screen won't seem like turning on (touch buttons not lighting up). Any luck on fixing this problem?

it turns out its was the usb data cable connector, surprised. i dont even know what one has to do with the other, anyways, i had it replaced and it works perfectly

Simply_Android said:
it turns out its was the usb data cable connector, surprised. i dont even know what one has to do with the other, anyways, i had it replaced and it works perfectly
Click to expand...
Click to collapse
Well I re-flashed the stock android 4.1.2 using odin, and everything got back to normal, the screen is working again. Though the phone is still freezing randomly, even after a couple of minutes after booting the phone. However I'm glad to get my phone with the screen working again!

Related

Bootlooping Tablet

I'm back after passing on my P7510 to my dad and switching to a TF300. Long story short, my dad shut down the tablet at night and tried powering it up in the morning. Got stuck on the initial Samsung screen with the padlock (it is unlocked).
Tried wiping and reflashing the firmware he was using which was the official ICS build but rooted and deodexed. Got the black screen with lines dealy after the initial Samsung logo and from there, bootlooped. Then I tried flashing another firmware that happened to be on there that he was previously using before the ICS update was released, UEKMP (again just stock, deodexed, and rooted). Same thing happened again with the lines before the boot animation. Samsung boot sound played at least before it just looped the animation. Tried odin with stock 3.2 firmware, which flashes fine, but also ran into the same issue (with lines and all before Samsung bootanimation).
Typically, i probably would have been able to fix similar issue by now by either rebooting (by holding power button and it will magically boot up as it would normally) or wiping and reflashing, but I am stumped on this one. Is it time for RMA? Looks like that's what some people seem to be resorting to after usual fixes don't work. I feel like the lines on the attempt to boot up may be a sign of something? I remember it being a kernel issue, which would be weird considering it was using the stock kernel when it was on Honeycomb or ICS. I've given up tonight as I have work early in the morning, but at least I was able to access nvflash and get cwm 4.x.x.x on there. Luckily it had a power down option so I'm just gonna let it sleep through the night . Any idears are very appreciated!
TL;DR
Bootlooping with black screen and lines even after flashing firmware or stock 3.2 P7510 Odin tar
Can access recovery and download mode fine, including nvflash
For anyone that cares or is in the same boat,
Resorted to going back to stock recovery and wiping the device (this also wipes /sdcard/ of course) and it's working fine again. Now I've got to get everything back on there for my dad..............

Flashed kernel to i9210 and screen stays black

Hi, got a galaxy s2 i19210 and using cm-10-20120926-UNOFFICIAL-i9210t
Was having a few random restarts and found that if I tweaked the voltages it would put an end to this. I found I had to use DreamKernel-GTI9210T-v1.7.1CM10-20121010073231-CWM to do this, so I downloaded it and tried to install via the rom manager.
Phone restarted to install, now when it turns on it says the usual 'galaxy s2 i9210' etc, then it usually goes to the blue cyanogen symbol spinning. Unfortunately, it no longer reaches this and the screen stays black. The lights turn on, but screen stays off.
Can't seem to get into download or reset mode with the key combination and sometimes instead of turning off the phone restarts which makes trying the key combinations a bit harder.
Have tried removing and replacing the battery but that didn't help either.
HOWEVER!
My computer recognises the phone although I can't access the hdd because the phone is locked
Odin recognises the phone
So, what options do I have to get my phone working again?
I've looked at a few threads and googled a bit but haven't found anything substantial
To clarify it's a Galaxy S2 i9210T 4G Australian Telstra phone
So I finally got into odin mode and cleared the dalvik cache and did a factory reset. Installed latest i9210 firmware via download mode and odin and everything is working again. Unfortunately I lost all my data but i'd prefer that than a brick. Still doesn't explain what happened in the first place though, did I use the wrong kernel or go about the install the wrong way? I'd like to go back to cm10 but fix the random resets.
You're more likely to get an answer here. Almost everyone here has an I9100/I9100T.
MistahBungle said:
You're more likely to get an answer here. Almost everyone here has an I9100/I9100T.
Click to expand...
Click to collapse
Thanks bud!

Stuck at boot up screen

I have an old S2 running wananm's JB ROM which until recently, could not boot up all of a sudden. It just gets stuck at the Samsung Galaxy SII logo with the yellow triangle on it. I did a factory reset and it worked after that, until a month later where I am having the exact same problem. This time I fulll wiped it and flashed NeatROM Lite 4.4 on it, but now the phone stucks in boot loop at the samsung boot up animation. Pulling out the battery and putting it back results in the previous issue where it gets stuck at the Galaxy SII black screen with yellow triangle. I boot into recovery and did one more factory wipe, but this time it goes back to being stuck with a boot loop.
Any ideas whats wrong? The phone is pretty old, could it be dying? Before all this happened I did not do any modifications to the phone like flashing new mods, scripts, OC, UV..etc
Flash a official stock firmware from sammobile.
After this root and flash Rom again.
PS: Check ur downloads and if u have the correct Rom for ur phone version (i9100/i9100p/etc)
CHEERS
Sent from my GT-I9100 with RootBox
I already flashed the stock ROM via odin. It is now unrooted. Been using it for a week and the issue just happened again. I now realised that it only happens when I attempt to replace the battery. I have two packs, both are official, one that came with the phone and another which I ordered online. After shutting the phone down, remove the old battery, put in the new one, attempt to boot up, it just gets stuck at the Samsung screen. The only solution is to do a full wipe. Could it be some sort of corruption?
Sure it can.
So if it only happens with it, it maybe corrupt in itself or maybe it's not directly for ur phone/android version etc....
So just don't use it, but that for u have a full working phone
CHEERS
Sent from my GT-I9100 with RootBox
Yeah it might not be android related, but it still is strange.. And I don't believe it'stthe battery screwing it up either. I'll try rooting it and see if it manages to boot up. If not I'll go back to an ICS ROM and see how it goes. Because I only notice all this happening ever since flashing JB. I hope it lasts til July so I can trade it in for the S4.

[Q] I747m Stuck at Samsung Logo

I recently went to unlock my phone via Z3X box, my phone was on 4.3 they said to downgrade to 4.1, I followed the steps using Cygwin Terminal in making a custom firmware, I flashed it via Odin and it passed, however was stuck at the Samsung Logo, no usally in this case I would boot into recovery and wipe data and cache, however my Home Button does not work, so I used my Jig to force in to download mode and flashed stock I747m 4.3, went to boot and same thing stuck at the Samsung logo???? any ideas what's wrong here???
mza2k9 said:
I recently went to unlock my phone via Z3X box, my phone was on 4.3 they said to downgrade to 4.1, I followed the steps using Cygwin Terminal in making a custom firmware, I flashed it via Odin and it passed, however was stuck at the Samsung Logo, no usally in this case I would boot into recovery and wipe data and cache, however my Home Button does not work, so I used my Jig to force in to download mode and flashed stock I747m 4.3, went to boot and same thing stuck at the Samsung logo???? any ideas what's wrong here???
Click to expand...
Click to collapse
Tried to factory reset after the 4.3 upgrade? Sounds like you might have borked your EFS partition with the z3x box, if a reset doesn't help...
http://forum.xda-developers.com/showthread.php?t=2471421
Some info from there might be helpful if you are still stuck. I know it is for the Note 3, but many of the same ideas apply, though the mount points are most likely different thus you can't just copy and paste those commands and hope it works (might even make it worse if the partitions are that different).
Is the Home button broken or just stopped working after trying to do this stuff?
Yeah the Home button just doesn't work when you press it that's why I needed the Jig to get in to Download Mode, and the phone was fine after trying with Z3X box it didn't do anything with Samsung tools because I was on 4.3 it started when I created that custom firmware and flashed it, haven't been able to get it to boot since that even with Stock Firmware..
Think you might need to check out this thread then:
http://forum.xda-developers.com/showthread.php?t=2549068
Sounds like an issue with the downgrade / bootloader deal. No Home button sounds like it might really cause some issues here though. Owning a repair shop, I'm pretty familiar with the S3 construction and it's pretty rare that the Home button stops working. Has it been repaired or gotten wet or something?
the phone was water damaged I just replaced the main board with a new one and the phone was fine minus the Home Button, and I have tried the SD card thing about 3 times now and it doesn't do anything???

stock phone stuck in a bootloop out of nowhere

hello everyone, my stock s6 edge on rogers is stuck in a boot loop all of a sudden, fully stock and unmodded, running 5.0.2. i was just walking and listening to music through bluetooth headphones and all of a sudden it stopped, and i looked at my phone and it was rebooting. so i just waited and its still stuck in a boot loop after an hour. it gets to the lock screen sometimes, and then after like a second or 2 just reboots again. i have not tinkered or have done anything to my phone either, and had no issues with random reboots ever, so i have no idea what could have happened
some extra info, when it reboots it doesnt always go to the galaxy s6 edge screen, it sometimes just shows the samsung logo with the animation. i have also tried to wipe cache and that didnt work either. after a few reboots however the stock theme was applied at some point. also i tried booting into safe mode and that also didnt work.
i really dont want to wipe my phone, but i will if it is absolutely necessary. so if anyone has any other suggestions that i can try out it will be very much appreciated!
thanks!
NuckFuggets said:
hello everyone, my stock s6 edge on rogers is stuck in a boot loop all of a sudden, fully stock and unmodded, running 5.0.2. i was just walking and listening to music through bluetooth headphones and all of a sudden it stopped, and i looked at my phone and it was rebooting. so i just waited and its still stuck in a boot loop after an hour. it gets to the lock screen sometimes, and then after like a second or 2 just reboots again. i have not tinkered or have done anything to my phone either, and had no issues with random reboots ever, so i have no idea what could have happened
some extra info, when it reboots it doesnt always go to the galaxy s6 edge screen, it sometimes just shows the samsung logo with the animation. i have also tried to wipe cache and that didnt work either. after a few reboots however the stock theme was applied at some point. also i tried booting into safe mode and that also didnt work.
i really dont want to wipe my phone, but i will if it is absolutely necessary. so if anyone has any other suggestions that i can try out it will be very much appreciated!
thanks!
Click to expand...
Click to collapse
I have had said problem before under the same circumstances (although it was with a different phone)
Try using Odin to install the stock Firmware.
A thread explaining how is right here.
http://forum.xda-developers.com/galaxy-s6-edge/general/sm-g925f-s6-firmware-thread-t3078841
If you don't want the firmware listed in that thread, download from Sammobile.
While some users say it does not wipe the phone, it wipes every time I use it
If this does not work, you should get a warranty replacement.
Snowby123 said:
I have had said problem before under the same circumstances (although it was with a different phone)
Try using Odin to install the stock Firmware.
A thread explaining how is right here.
http://forum.xda-developers.com/galaxy-s6-edge/general/sm-g925f-s6-firmware-thread-t3078841
If you don't want the firmware listed in that thread, download from Sammobile.
While some users say it does not wipe the phone, it wipes every time I use it
If this does not work, you should get a warranty replacement.
Click to expand...
Click to collapse
Thank you for the reply!
weird thing is it fixed itself .. few hours after it started it just booted back up and didnt reboot again, and has been running fine for the past couple hours. but if this happens again i will know what to try next time

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