Need help fixing phone - Honor 7 Q&A, Help & Troubleshooting

Everytime I enter recovery it just starts installing the update I placed in /dload, but I can't delete this as I can't access my phone using my computer. Is there anyway I can get into the bootloader/fastboot mode without using ADB or accessing the system?

if folder dload is on your internal sd, you can use factory reset to clean -> press volume up and power on together for a few seconds to start this procedure.
this procedure will delete your system AND all your data on the internal sd!!! Caution!
or...
if folder dload is on your external sd card, remove it until starting recovery.
BTW: why it seems not possible to connect your Honor 7 to your pc? Anything missing or unknown procedure?
you know, that you will be able to go into boot mode with connecting usb to pc and pressing vol down until rebooting your device.

Customality said:
Everytime I enter recovery it just starts installing the update I placed in /dload, but I can't delete this as I can't access my phone using my computer. Is there anyway I can get into the bootloader/fastboot mode without using ADB or accessing the system?
Click to expand...
Click to collapse
How do you enter recovery? Pressing power + vol up?
Never heard that this combo always starts installing update automatically so wanna clarify a bit.
For solution, as said above just delete dload folder and it won't install the update.

muradulislam said:
How do you enter recovery? Pressing power + vol up?
Never heard that this combo always starts installing update automatically so wanna clarify a bit.
For solution, as said above just delete dload folder and it won't install the update.
Click to expand...
Click to collapse
Thanks

Related

stuck on system recovery after using odin..ok button not working

i tried to flash 2.2 using odin but i cant select reboot or any other command on the list.. what do i do? or is my phone done?
Lavundra21 said:
i tried to flash 2.2 using odin but i cant select reboot or any other command on the list.. what do i do? or is my phone done?
Click to expand...
Click to collapse
No sir, you should be just fine, try to reflash back to stock using odin, pull the battery remove the sim and sd card, and then go into downloader mode, and try again.
stock FW here, good luck.
Lavundra21 said:
i tried to flash 2.2 using odin but i cant select reboot or any other command on the list.. what do i do? or is my phone done?
Click to expand...
Click to collapse
Read the froyo thread you need to adb reboot
Sent from my SGH-T959 using XDA App
still cant get it to work... i dunno what im doing wrong. but it seems like all the files needed arent in the link from above.
Keep trying
Try enter "downloading mode" with the sd card in the phone(after many attempts it worked for me), there is a thread in this forum about how to enter "downloading mode" and flash the phone.
still cant get out of the android system recovery mode.. ive tried holding buttons down while turning the phone on and off and theres nothng happening. still cant use the power button as the ok.
i got the same problem i cant use any button as ok
is there a way to get the ok button, or what i can do to get over this problem
thanks in advance
Let me know if these steps help:
Here is a couple of methods to get into download mode. Once you get to
download mode, follow the directions in second part of my post...
First Method
1) Pull the battery, sim card, and sd card.
2) Reinsert battery but do not press any buttons.
3) Plug into usb that is connected to your computer. If something shows up
on the screen (charging logo) then you should be golden.
4) Hold the vol up, vol down, and power until the screen comes on,
immediately release the power button but not the other two. Hopefully it
will boot into download mode and than you can use Odin to get back to stock.
Second Method
1) Another method that seems to work for some people is to pull the battery,
sim, sd card.
2) Reinsert battery and hold both volume buttons but do not press power
button.
3) Then plug in usb. The phone should boot into download.
Third Method
1) You will need the samsung ADB drivers installed for your phone and ADB.
Samsung Drivers for 32 bit Windows: http://files.androidspin.com/downlo...=SAMSUNG_USB_Driver_for_Mobile_Phones_x86.exe
Samsung Drivers for 64 bit Windows: http://files.androidspin.com/downlo...ung/vibrant/&file=usb_drivers_GalaxyS_x64.zip
2) Remove sim card and sd-card. Remove the battery.
3) Hold buttons vol up, vol down, and power.
4) While holding down those 3 buttons put the battery back in and keep
holding all 3 buttons until the vibrant disappears and reappears. Once it
reappears, release all 3 buttons.
5) Now connect your phone to your pc via USB cable.
6) Open a cmd prompt and navigate to the folder with ADB and type "ADB
REBOOT DOWNLOAD" caps are not necessary.
7) Your phone will reboot into the download
How to get back to stock once in Download Mode:
Download the files in the linked thread and follow the directions there or
the ones in my post below.
Odin and Files Needed Available Here: http://forum.xda-developers.com/showthread.php?t=734475
1) Open Odin and verify that one of the Com ports shows a device connected.
If it doesn't try using a different usb port.
2) Load the .pit and pda files. It should be pretty obvious how to do that
once you are in Odin.
3) Make sure that the option to partition is unchecked. The other two
options should be checked.
4) Hit start and wait.
5) Your phone will restart when Odin is done and you will be good to go.
Seems to be the same issue
I just tried upgrading to 2.2 using Odin and this seems to be the same problem. It seems that every solution starts with, "Enter Into Download Mode..." but no method seems to work.
I wouldn't say the phone is "bricked" as when it is plugged into a computer it will install the drivers and Odin sees it, but I can't get it into anything but recovery mode.
The buttons seem to be strangely mapped, the up and down buttons are reversed and the power button doesn't seem to be working as the "Ok" button. The menu toggles the recovery screen and the <!> graphic with the Android. Anyone figured out how to solve this? In the meantime I will continue attempting to get into download moad.
Hi, I have the same exact problem. Stuck in system recovery. Volume buttons reversed. Power button does nothing. Cannot get into download mode. Please Help
what happened?
I just got the same issue :S
the volumes buttons are wrong and the power (OK) button is not working on system recovery mode...
any help?
same problem - samsung galaxy vibrant
brianking21 said:
Hi, I have the same exact problem. Stuck in system recovery. Volume buttons reversed. Power button does nothing. Cannot get into download mode. Please Help
Click to expand...
Click to collapse
can't mount /dev/block/mmcblk0p1
(invalid argument)
e:copya_dbdata_media:can't mount SDCARD:
your storage not prepared yet, please use UI menu for format and reboot actions
copy default media content failed
Folks, any update regarding this problem. I got very same problem, and could not find a solution yet.
hints?
I have the same problem also. I got into the problem by following a thread down grading to 2e version from 3e version. I've tried lots of things including going back to stock--or what I think is stock. I now have the 3e version again but when I bring up recovery mode the up/down buttons are backwards and the ok (power) key doesn't work.
Suggestions? HELP?
We can get into root console and manually tweak files if that will help.
UPDATE----SOLUTION
I got this working by reloading the stock t-mobile kernel from http androidspin.com/2010/08/09/how-to-restore-or-recover-your-samsung-vibrant/. This link provided at that site is single file so just use the pda and pit boxes in odin. In desperation I selected re-partion and Phone bootloader update.
I was unable to get into the recovery console with hitting any keys but adb did the trick. Volumn-up and power gets into the flash download
Finally Fixed it
I finally was able to get the phone into download mode by holding down the volume up key, the search key and the power key.
It seems the key mapping was just messed up.
After it entered download mode I followed the guide on androidspin /2010/08/09/ how-to-restore-or-recover-your-samsung-vibrant (add the .com to androidspin, forum won't let me post links yet)
Hi How did you hold the search key. It does not light up till the vibrant shows on screen. Can you please explain how to managed to hold vol up, power and search together? thanks
Sivaavis its only a 3-button combo, not 4. Why u holding down search? Its up,down volume and power and then when the vibrant logo shows u let go of power.
Sent from my SGH-T959 using XDA Premium App
If you are in recovery mode just go into adb and type in:
adb reboot download
You should be in download mode

[Q] not sure what to do

Hello,
I am not sure what happened, but here is the story.
First, I tried to root the phone using the 1-click method, only to later realize that it does not work as the phone I had was running the latest OTA update. I wanted to reset my phone to factory default and I proceeded to do that.
Now, when my phone starts I see the small recovery menu and a lot of red letters stating that the system could not mount, find or open recovery directories, files or logs. (On the screen is this info Enter ok key,Select vol up/down Rebot system now, apply update from scard,wipe data/factory reset,wipe cache partition But nothing will move courser,then blow that in red is E:failed to open/res/recovery.fstab(no such file or directory) E:unknown volume for path[/cache/recovery/command with a lot more then in yellow letters #manual mode# and the same messages)
When I enter the download mode, and tried to use Odin or ADB, neither one can detect my device. I tried installing different samsung drivers on my system to no solution to being able to detect the device. Is this due to Windows not being able to initiate the drivers correctly, because when I connect the phone in Download mode, Windows has a pop-up show up that says "Drivers not recognized, your device might not work properly".
Does this mean the phone is bricked or is there something I can do to restore the phone?
Informatic_dev said:
Hello,
I am not sure what happened, but here is the story.
First, I tried to root the phone using the 1-click method, only to later realize that it does not work as the phone I had was running the latest OTA update. I wanted to reset my phone to factory default and I proceeded to do that.
Now, when my phone starts I see the small recovery menu and a lot of red letters stating that the system could not mount, find or open recovery directories, files or logs. (On the screen is this info Enter ok key,Select vol up/down Rebot system now, apply update from scard,wipe data/factory reset,wipe cache partition But nothing will move courser,then blow that in red is E:failed to open/res/recovery.fstab(no such file or directory) E:unknown volume for path[/cache/recovery/command with a lot more then in yellow letters #manual mode# and the same messages)
When I enter the download mode, and tried to use Odin or ADB, neither one can detect my device. I tried installing different samsung drivers on my system to no solution to being able to detect the device. Is this due to Windows not being able to initiate the drivers correctly, because when I connect the phone in Download mode, Windows has a pop-up show up that says "Drivers not recognized, your device might not work properly".
Does this mean the phone is bricked or is there something I can do to restore the phone?
Click to expand...
Click to collapse
did you try a different usb port? also I'd try heimdall and see if that works and sees your phone. which stock odin package are yup trying to flash?
I did manage to recover to the stock EH03 rom, by doing the first couple of steps in section 4 of the Guide for installing Rom (http://forum.xda-developers.com/showthread.php?t=1238070).
At this point, I cannot get root on my phone. I tried using 1 click root methods and those fail to install SU. I tried using the manual method of pushing rage.bin file using ADB, but that also failed.
I tried flashing some of the ROMs from section 4 of the above guide, but they cant seem to install on my phone. When I try to install through recovery, I get the picture of the android on the side and a failed install and either get stuck with the Samsung logo or a recovery boot loop.
Am I missing a step or something in order to root the phone or load a custom ROM? Is it possible that my phone cannot be rooted due to a lock somewhere?
Thanks.
Informatic_dev said:
I did manage to recover to the stock EH03 rom, by doing the first couple of steps in section 4 of the Guide for installing Rom (http://forum.xda-developers.com/showthread.php?t=1238070).
At this point, I cannot get root on my phone. I tried using 1 click root methods and those fail to install SU. I tried using the manual method of pushing rage.bin file using ADB, but that also failed.
I tried flashing some of the ROMs from section 4 of the above guide, but they cant seem to install on my phone. When I try to install through recovery, I get the picture of the android on the side and a failed install and either get stuck with the Samsung logo or a recovery boot loop.
Am I missing a step or something in order to root the phone or load a custom ROM? Is it possible that my phone cannot be rooted due to a lock somewhere?
Thanks.
Click to expand...
Click to collapse
You should have read a little but noe I'm going to tell you what to do head over to droid styles guide here http://forum.xda-developers.com/showthread.php?t=1238070 now download cwmfixedforcm7.zip and atlas 2.2.zip and put it on your computer now download this. http://downloads.noshufou.netdna-cdn.com/superuser/Superuser-3.1.3-arm-signed.zip put it on the root of your SD card now power on your computer run Odin as AMINISTRATOR put the atlas.zip in the pit space in Odin check mark beside the place that said PDA and put the cwm.zip there now put your phone in download mode hook it to the computer and when Odin recognizes it press start wait for it to say PASS it may take up to 20min when its done reboot the while while holding the volume buttons, Home key button, power button when you see the Samsung logo flash twice let go of the volume up button and the home key button continue holding volume down button and the power button you should now boot into a menu with blue text now release the buttons navigate with the VOLUME BUTTONS AND THE POWER BUTTON TO SELECT go to install zip from SD now choose zip from SD navigate to the .zip I told you to put on your SD card select it then you will see a bunch of no's and a yes select yes AFTER its finished press go back then press reboot system now ONCE IT REBOOTS CONGRATS YOUR ROOTED AND SHOULD HAVE SUPERUSER!!!
Sent from my SCH-I500 using Tapatalk 2
I managed to get it working, maybe the SU.tar was corrupted as it worked this time. Thanks.

Can't boot into recovery- bootloop and broken Volume UP.

Hello. Today i wanted to change my OS on my S3. So i have done it, i wanted to do some upgrades like viper4android. I have broken volume up, so the only way to get into recovery is in android only. So, I installed it, and i have bootloop. I cant boot to fastboot (volume up needed), and ofcourse recovery. I can see only bootloop... I just have to boot into recovery. How to do that? Help, please. Thanks.
Does adb recognize your device? If so
adb reboot recovery
If you don't have adb then go get them via Google
snkmv said:
Does adb recognize your device? If so
adb reboot recovery
If you don't have adb then go get them via Google
Click to expand...
Click to collapse
Well, i tried, but my phone isn't recognized on my pc. I just plug it into pc, and nothing. Tried on netbook, nothing . Dunno why. Its normal?
You have drivers installed?
I know this is an old thread, but I figured it'd be better to hijack it than create a new one.
A while back my phone started randomly freezing and rebooting, last week it just got into a bootloop instead, my volume up key isn't working, so I can't go into recovery-mode nor download-mode (since one has to press volume up to continue), I've tried to use adb, using a script to wait for a connection, then instantly freezing it so it can either send over a file or just boot into recovery, but it seems it doesn't boot up enough for a connection to start. I also tried removing my volume key and manually pressing the volume up key with both a toothpick and a screw-driver (just in case contact with metal would change the outcome), but didn't work. Has anyone found a solution?, Is there a way to boot into either recovery- or download-mode without the need to have the phone turned on first or using the volume up key?

bootloop

My lenovo a806 stucked at bootloop suddenly . It's a rooted device with CWM recovery installed .How to retrieve the data stored inside the phone ? I know to flash original rom recovery , but by doing this , the data will be wiped , right ? How to save the data ?
delsoo said:
My lenovo a806 stucked at bootloop suddenly . It's a rooted device with CWM recovery installed .How to retrieve the data stored inside the phone ? I know to flash original rom recovery , but by doing this , the data will be wiped , right ? How to save the data ?
Click to expand...
Click to collapse
Do you have a custom rom installed?
No, I think it's the original rom by Lenovo.. How to solve this?
I tried to retrieve the data using adb shell , but unfortunealy , it failed . Any alternative???
delsoo said:
I tried to retrieve the data using adb shell , but unfortunealy , it failed . Any alternative???
Click to expand...
Click to collapse
Do you have an sd card? Or usb drive with a usb otg connector? If so, (Not sure if cm recovery us close to twrp, but if it is) then you should be able to copy the data folder to one of those and then flash a new Rom and then copy and paste some of the directories. Orr do a nandroid backup if /data, and then flash a new ROM and restore that data backup afterwards. They would have to be the same Rom as you have now though
Sorry it took me so long. Next time quote me so I get a notification
Craz Basics said:
Do you have an sd card? Or usb drive with a usb otg connector? If so, (Not sure if cm recovery us close to twrp, but if it is) then you should be able to copy the data folder to one of those and then flash a new Rom and then copy and paste some of the directories. Orr do a nandroid backup if /data, and then flash a new ROM and restore that data backup afterwards. They would have to be the same Rom as you have now though
Sorry it took me so long. Next time quote me so I get a notification
Click to expand...
Click to collapse
The phone cant even enter the CWM Recovery .When I press volume down + power button , the phone entered the Lenovo Recovery instead of CWM Recovery... Any other solution ? @Craz Basics
Craz Basics said:
Do you have an sd card? Or usb drive with a usb otg connector? If so, (Not sure if cm recovery us close to twrp, but if it is) then you should be able to copy the data folder to one of those and then flash a new Rom and then copy and paste some of the directories. Orr do a nandroid backup if /data, and then flash a new ROM and restore that data backup afterwards. They would have to be the same Rom as you have now though
Sorry it took me so long. Next time quote me so I get a notification
Click to expand...
Click to collapse
The phone cant even enter the CWM Recovery .When I press volume down + power button , the phone entered the Lenovo Recovery instead of CWM Recovery... Any other solution ? @Craz Basics
delsoo said:
The phone cant even enter the CWM Recovery .When I press volume down + power button , the phone entered the Lenovo Recovery instead of CWM Recovery... Any other solution ? @Craz Basics
Click to expand...
Click to collapse
Reflash a custom recovery (I'd recommend TWRP )
Craz Basics said:
Reflash a custom recovery (I'd recommend TWRP )
Click to expand...
Click to collapse
By doing so will wipe all the existing data, right? Any ways to keep the data before flashing? I was stucked at bootloop...
delsoo said:
By doing so will wipe all the existing data, right? Any ways to keep the data before flashing? I was stucked at bootloop...
Click to expand...
Click to collapse
No, twrp that I'm aware if will not wipe data. Unlocking the bootloader will though if it's not already unlocked
Craz Basics said:
No, twrp that I'm aware if will not wipe data. Unlocking the bootloader will though if it's not already unlocked
Click to expand...
Click to collapse
how to flash twrp into my phone now ? My phone already stucked at bootloop .... And i cant access the CWM Recovery at all
delsoo said:
how to flash twrp into my phone now ? My phone already stucked at bootloop .... And i cant access the CWM Recovery at all
Click to expand...
Click to collapse
Hold down a set of buttons (Not sure which ones for you, but force restart it and then switch to buttons to boot into recovery. Google the button combo )
How did you flash cmw recovery? Should be the same as that
Craz Basics said:
Hold down a set of buttons (Not sure which ones for you, but force restart it and then switch to buttons to boot into recovery. Google the button combo )
How did you flash cmw recovery? Should be the same as that
Click to expand...
Click to collapse
the cwm wasnt flashed by me last time . Can you teach me how to flash twrp into my phone which is having bootloop now ?
I tried adb fastboot , adb pull method , all failed . It said the device is unauthorised
delsoo said:
the cwm wasnt flashed by me last time . Can you teach me how to flash twrp into my phone which is having bootloop now ?
Click to expand...
Click to collapse
I found this guide on how to flash twrp and root, you shouldn't worry about rooting until you get booted up first... As for the force reboot, I couldn't find out how to force power it off, so try some of the following:
- Take our battery (if there is a removable one)
- Hold down the volume down and power simultaneously for about 10 seconds (maybe less, maybe more)
- If there is a physical home button, try holding volume down, power and home. (Or volume up)
Once powered off (when the screen turns off, you maybe have to be quick before it restarts. If it does just re-power it off and try again) then hold down power and volume up to boot into recovery mode. You shouldn't need twrp if you can boot into cmw. But I do recommend it when we are finished...
You'll also need a custom (or stock) ROM to flash. I'll show you how to push to your phone with adb if mtp doesn't work in cmw.
Craz Basics said:
I found this guide on how to flash twrp and root, you shouldn't worry about rooting until you get booted up first... As for the force reboot, I couldn't find out how to force power it off, so try some of the following:
- Take our battery (if there is a removable one)
- Hold down the volume down and power simultaneously for about 10 seconds (maybe less, maybe more)
- If there is a physical home button, try holding volume down, power and home. (Or volume up)
Once powered off (when the screen turns off, you maybe have to be quick before it restarts. If it does just re-power it off and try again) then hold down power and volume up to boot into recovery mode. You shouldn't need twrp if you can boot into cmw. But I do recommend it when we are finished...
You'll also need a custom (or stock) ROM to flash. I'll show you how to push to your phone with adb if mtp doesn't work in cmw.
Click to expand...
Click to collapse
Can you teach me how to pull the data using adb only ? The rest ( flash ori / custom rom ) , i am familiar .....
Craz Basics said:
I found this guide on how to flash twrp and root, you shouldn't worry about rooting until you get booted up first... As for the force reboot, I couldn't find out how to force power it off, so try some of the following:
- Take our battery (if there is a removable one)
- Hold down the volume down and power simultaneously for about 10 seconds (maybe less, maybe more)
- If there is a physical home button, try holding volume down, power and home. (Or volume up)
Once powered off (when the screen turns off, you maybe have to be quick before it restarts. If it does just re-power it off and try again) then hold down power and volume up to boot into recovery mode. You shouldn't need twrp if you can boot into cmw. But I do recommend it when we are finished...
You'll also need a custom (or stock) ROM to flash. I'll show you how to push to your phone with adb if mtp doesn't work in cmw.
Click to expand...
Click to collapse
I cat boot into CWM recovery now
delsoo said:
I cat boot into CWM recovery now
Click to expand...
Click to collapse
Alrighty so if you have fill adb drivers than great, if not this should still work fine...
Download this: https://androidfilehost.com/?fid=673368273298958289
Has adb in it, ignore all the root stuff. So extract the file to your desktop and open the folder. Put your ROM in the folder and name it something easy like rom.zip (important it's not rom.zip.zip)
When in the folder, hold shift and then right click inside the folder and select "open command window here" and then type "adb devices" and make sure something comes up with a ton of random characters. If nothing comes up (make sure phone is plugged in lol) then install your phone's drivers. Then try again. Next type this exactly as follows (if you names it rom.zip)
Code:
"adb push rom.zip /sdcard/rom.zip"
**NOTE the space between rom.zip and /sdcard**
This should take awhile, depending on how big the file is. You should see a pulsing dash in the left side of the command prompt. It will stop blinking and bring up a new line when done. Now go into cmw and flash the file in your sd card (rom.zip)
Going to sleep, I'll reply early in the morning before school
Craz Basics said:
Alrighty so if you have fill adb drivers than great, if not this should still work fine...
Download this: https://androidfilehost.com/?fid=673368273298958289
Has adb in it, ignore all the root stuff. So extract the file to your desktop and open the folder. Put your ROM in the folder and name it something easy like rom.zip (important it's not rom.zip.zip)
When in the folder, hold shift and then right click inside the folder and select "open command window here" and then type "adb devices" and make sure something comes up with a ton of random characters. If nothing comes up (make sure phone is plugged in lol) then install your phone's drivers. Then try again. Next type this exactly as follows (if you names it rom.zip)
Code:
"adb push rom.zip /sdcard/rom.zip"
**NOTE the space between rom.zip and /sdcard**
This should take awhile, depending on how big the file is. You should see a pulsing dash in the left side of the command prompt. It will stop blinking and bring up a new line when done. Now go into cmw and flash the file in your sd card (rom.zip)
Going to sleep, I'll reply early in the morning before school
Click to expand...
Click to collapse
this file is for samsung s7 , right ? Mine is lenovo a806
delsoo said:
Alrighty so if you have fill adb drivers than great, if not this should still work fine...
Download this: https://androidfilehost.com/?fid=673368273298958289
Has adb in it, ignore all the root stuff. So extract the file to your desktop and open the folder. Put your ROM in the folder and name it something easy like rom.zip (important it's not rom.zip.zip)
When in the folder, hold shift and then right click inside the folder and select "open command window here" and then type "adb devices" and make sure something comes up with a ton of random characters. If nothing comes up (make sure phone is plugged in lol) then install your phone's drivers. Then try again. Next type this exactly as follows (if you names it rom.zip)
this file is for samsung s7 , right ? Mine is lenovo a806
Click to expand...
Click to collapse
Root.bat is for Samsung yes, but adb is universal. We aren't worrying about root
Since you didn't have adb installed this is a lightweight version so you don't have to install it. This is just the file link I had on hand

i cant access to recovery mod ad fast boot

hi i trying to reset my phone p20lite
bit cant access
to erecovery mod and fast boot
with adb code =adb reboot-bootloader
its not go to fast boot
after restart go to phone android
in dialpad *#*#2846579#*#* and upgrad from sd card not working and refresh it to current menu(i already hav dlaod rom in sd card)
its very bad problem for me
if i facktory reset my phone from setting and erease all data
after start it will show all of my old filw and app
its mean not reset '
pls help me
Hello,
is your device rooted?
I am experiencing something similar. I can't enter in recovery or fastboot.
My device is rooted and running emui 9.1.0.132.
I want to flash the stock recovery to make an update.
chacox said:
Hello,
is your device rooted?
I am experiencing something similar. I can't enter in recovery or fastboot.
My device is rooted and running emui 9.1.0.132.
I want to flash the stock recovery to make an update.
Click to expand...
Click to collapse
no test by root check
not rooted my mobile
i cant install any rom
what can i do
No, my device is not rooted. I just fix it. First when I put the update in a formated SD card in a folder dload and then connected to my pc, hold + and - volume buttons + power button it started updating, it finishes and nothing happened, and when I push again the buttons there wasn't Factory reset in the menu but when I disconnect the phone out of the PC and hold volume keys and power then the factory reset menu appeared. I reset it and now everything is ok.

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