Hello
I have 2 exactly same model of Huawei Ascend P1 LTE U9202L-1 Build120. One of them is working fine all this while. However, lately, the other device stucked at the booting logo screen and unable to boot to the main screen.
I have tried ADB and Fastboot command, and it somehow managed to get the problem set to main screen, but the "Power" and "Vol Down" buttons not working when in the recovery mode and as well the main screen. However, when I tried to boot to the fastboot mode by pressing the "Power" and "Vol Down" buttons, my pc recognized it and I could enter fastboot commands, but not in the recovery mode and main screen mode....not so sure what are the exact problems and errors....to put in simple, the "Power" and "Vol Down" buttons are not spoilt, but I do not know why they are not working when in the recovery mode and main screen mode?? Whether the problem set is semi-bricked or just software corruption??
I have read the forums about using command "fastboot flash boot boot.img", "fastboot flash recovery recovery.img" and "fastboot flash system system.img", but confusing me....and I do not want to take the risk....
I would like to know is there any faster ways to clone the rom images of the good working set, and flash it on the problem set? Any experts out there kindly assist.
Many Thanks.
Related
It's possible to enter fastboot using "adb reboot bootloader" if the system is up and running and you have ADB.
However:
Has anyone figured out how to enter fastboot via a keycombo on power up?
VolDn sends you to recovery
VolUp (which was fastboot on the Find5) takes you to some sort of factory mode.
https://plus.google.com/101093310520661581786/posts/F1LKcuN5RVV is a screenshot of factory mode - does one of those happen to say fastboot (for those of you who read Chinese)?
Thanks to Jiangyi:
Entropy512: Factory mode
Auto test
Manual test
Individual test
Test result
Debug test options
Wipe emmc
Version info
Reboot phone
Can't find a way to enter fastboot...
On another mtk6589 device (wiko stairway), you need to hold vol down and up and then start (power on).
Chris
Hi Entropy i have Oppo r819 and got bootloop and no fastboot. Have you solved? Cam you help me? Please
I tried to root my phone and followed all steps until it asked to boot into the custom recovery and that only displayed a blackscreen and if I tap on the screen the phone vibrated. I cannot boot into bootloader as the phone just automatically tries to enter recovery with blackscreen.
Hold all buttons the phone boots normally and can use the phone as usual.
I've tried to use the adb and fastboot cmds to restore and factory reset but just reboots and tries to enter recovery with the blackscreen.
My device is htc_a51ul if that helps.
Thanks,
Phatzy
Tighten two volume buttons and the power button when you see a black screen and holding down the volume- and power button that would go to zagruzchik.Telefon must be connected to kompyuteru.Esli got to go to the boot loader, boot into download sistemu.Esli not work then you have forgiven stock rekaveri of loader. https://yadi.sk/d/nWnRAChBnEtxG
I think you have flashed a wrong recovery ,first thing to do now is flash stock recovery and whether if it is working fine if so then flash the proper version of twrp 2.8.7.0 is recommended and see if it works
I had the same issue when I first flashed twrp on lollipop but then I did the above and now everything is fine.
while its on the blackscreen only adb commands work. If i try fastboot commands its just waiting for device and phone dont respond. I cannot get into bootloader at all with volume keys or with adb command.
Many thanks for suggestions.
Ok I have now managed to get bootloader back and I can now enter the stock recovery but when I enter recovery it has a red triangle. Is there anyway to remove this?
Thanks.
So I already had a rooted (and I'm pretty sure unlocked bootlader) version of the stock Asus and wanted to put CM13 nightly on there. Everything was going smooth until I got to the stage where I have to load into TWRP and I got the error screen with the little dead alien and the red symbol.
Now I can't enter normal boot, but entering recovery mode seems to work. I tried the option to side load a package from ADB on that screen but nothing worked (.zip files extracted, but I got an error on the phone).
As you can tell, I'm really new to this so any help would be greatly appreciated. I tried looking around, but it seems the more common issue is people not being able to enter recovery mode or something similar.
Thanks
Looks like your doing it wrong. Being rooted does not necessarily mean that your bootloader is unlocked.
By the looks of it your in recovery mode with the dead robot with the "error" message. That is normal. To reboot back into system you either have to press (I don't remember) power button and volume up or down button. Then you should see some options with reboot to system. Or if that does not work you can hold the power button till it turns off.
Then you get back into Android, download the official bootloader unlock tool from ASUS and install it on your device. NOTE: If you updated to MM then this will not work and this will void your warranty.
Run the tool and press unlock and it should reboot into fastboot where it should begin the unlocking process. I believe it should automatically reboot and you should see that the Asus logo is now black instead of white. If not, repeat the process.
You can now proceed to flash twrp recovery. Boot into fastboot/bootloader mode either with "adb reboot bootloader" or hold a specific set of buttons while off to go directly into fastboot.
On the computer, connect your device and type in "fastboot flash recovery (path to twrp IMG without brackets)"
When done you should be able to reboot into twrp recovery where you can flash the cm13 zip.
Hope this helped.
Hi guys,
I have a nexus 7 2013 which boot loop (or any watchdog restart ?).
If I try to normal start this one, I will get the Google logo for few seconds, then it will restart on its own.
If i press the volume down during this process, I can boot to bootloader, but same way, after few second, device will restart.
Any clue on what can be wrong ?
Thanks
Nico_FR said:
Hi guys,
I have a nexus 7 2013 which boot loop (or any watchdog restart ?).
If I try to normal start this one, I will get the Google logo for few seconds, then it will restart on its own.
If i press the volume down during this process, I can boot to bootloader, but same way, after few second, device will restart.
Click to expand...
Click to collapse
Hello, connect external power and try again. If it works now, you will have to replace the battery.
If it does not work with external power and it can not stop in bootloader/fastboot mode, then the hardware is faulty or the bootloader is corrupt.
External power does not change anything. Still boot loop, so really should be a hardware issue.
If I keep volume up key pressed, it boots, but almost unusable if I have to continuously press the volume up key.
Same when in bootloader: if I continuously press the volume up key, it does not reboot.
I've tried to erase everything with fastboot, but cannot do most of the operation. When trying to format data, it says that partition does not exists (it exists, as it can boot !)
Bootloader is locked, so cannot go with TWRP for example, as I cannot validate the on screen confirmation needed to oem unlock.
Do you know any way to unlock bootloader without use of onscreen confirmation ?
I don't know if that would help, but when I was installing Lineage OS and updated TWRP, I also boot looped once on recovery (recovery itself was boot-looping), and re-downloading (from another browser) and re-installing recovery at fastboot mode fixed my issue.
I cannot unlock the bootloader because of this issue, so cannot flash anything
Could be broken power button, if it is stuck and pressing it continuously.
Are you able to reach your recovery to factory reset?
I mean can you reach it from the bootloader menu?
If not you could try to put twrp.img or recovery.img into your PC adb&fastboot folder and try
fastboot boot twrp.img
or
fastboot boot recovery.img
Don't know if this works with locked bl
Edit: may type
fastboot getvar all
and post your result, hide your imei if you got one
Please help me to delete this post. i find a guide in my language. thank
Dear fellows,
please help me this case.
My zf2 550ml is in android 5.0.
i tried to flash MMbootloader <https://forum.xda-developers.com/showpost.php?p=68806518&postcount=117> to up 6.0 rom. After that, i lost the recovery, cannot access by hold power and Vol +.
Turn off the phone and on again, there is no boot screen or logo. The phone can still boot to android and work normally and still see my phone in adb devices.
Thank.
demonntl said:
Please help me to delete this post. i find a guide in my language. thank
Dear fellows,
please help me this case.
My zf2 550ml is in android 5.0.
i tried to flash MMbootloader <https://forum.xda-developers.com/showpost.php?p=68806518&postcount=117> to up 6.0 rom. After that, i lost the recovery, cannot access by hold power and Vol +.
Turn off the phone and on again, there is no boot screen or logo. The phone can still boot to android and work normally and still see my phone in adb devices.
Thank.
Click to expand...
Click to collapse
what every firmware you are currently on.. extract firmware zip file and copy ifwi, recovery, boot, droidboot, splashscreen images and paste those images in adb fastboot toll folder
now in adb fastboot tool folder move your cursor to and empty place hold shift and right click. find option open command windows here. now run following commands
fastboot devices ( to see if device recognized)
fastboot flash splashscreen splashscreen.img
fastboot flash ifwi ifwifilename
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash fastboot droidboot.img
fastboot reboot bootloader
now use volume button to find recovery mode option. click power button to enter recovery. you will enter recovery
( note: if you see an error screen with android logo. at that screen click and hold power button and then click volume plus and release power button you will enter recovery)