Need some advice.... - Desire 820 Q&A, Help & Troubleshooting

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.

Related

Flashing TWRP

Cant seem to flash TWRP, will this be because I am on the latest OS 3.2.2? Bootloader is unlocked and when I flash the recovery image with [fastboot flash recovery recovery.img] via terminal on a mac I just get looped back into bootloader. If I press volume down and recovery its the same 5 second warning then I never get to TWRP. If i hold volume down and power until the boot loader disappears then the only way I can get the phone back on is volume up & power which takes me back to the bootlader.
TIA
the OS will not have anything to do with not being able to or not to install a recovery, what u can try to do is (if u can) boot to ur OS and download flashify and install twrp that way, if u can't then try the fastboot again, fastboot flash recovery nameofrecovery.img then u use the vol + and power until device powers off and the power on, then press the vol key when the bootloader unlock screen comes one go to recovery and try see if it works, when u r done flashing don't use fastboot reboot, u have to manually power off the device, are u getting stock recovery at all? and also to does it show it has transferred successfully
kevindorward said:
Cant seem to flash TWRP, will this be because I am on the latest OS 3.2.2? Bootloader is unlocked and when I flash the recovery image with [fastboot flash recovery recovery.img] via terminal on a mac I just get looped back into bootloader. If I press volume down and recovery its the same 5 second warning then I never get to TWRP. If i hold volume down and power until the boot loader disappears then the only way I can get the phone back on is volume up & power which takes me back to the bootlader.
TIA
Click to expand...
Click to collapse
Try
Code:
fastboot boot recovery.img
and see if you can boot to TWRP.If you're successful,flash the TWRP img from the recovery itself.
__
v7
XDA Assist

unable to enter recovery mode

since yesterday i was not able to enter recovery mode. If i press vol up+ power then i can enter bootloader. but when i choose recovery and press the power button, it just reboot the device and enter bootloader again. the device itself is working fine, but i can not ota update
Same
I finally got around to going through the root/bootloader/recovery/rom process, only to get stuck at this exact problem. Rooted and unlocked bootloader just fine, no issue flashing the recovery via fastboot until I actually try to load into recovery mode for the first time. Exact same experience, loads in to flash boot mode, reboots when I try to select recovery mode.
Someone help! I want CM13!

Tried flashing CM13, now can't enter normal boot

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.

Bootloop even when in recovery mode

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

can't get into recovery mode

hi
i just unlocked my mi5s now, but when im trying to get into recovery mode (volume up + power) it still shows me the phone picture.
there is something that i am missing?
Flash the recovery, when in fastboot reboot into recovery by "fastboot boot recovery.img" if that's the name of the file on your computer. It will boot into recovery. After that, turn of the phone and boot into recovery with the button combination. Do not boot into the OS as it will disrupt the process! After this you should be fine. If not, try again, as you probably failed to directly boot into recovery with the button action.
Also, do check that you push both the volume keys plus the on/off button. So three in total.
8166uy said:
Flash the recovery, when in fastboot reboot into recovery by "fastboot boot recovery.img" if that's the name of the file on your computer. It will boot into recovery. After that, turn of the phone and boot into recovery with the button combination. Do not boot into the OS as it will disrupt the process! After this you should be fine. If not, try again, as you probably failed to directly boot into recovery with the button action.
Also, do check that you push both the volume keys plus the on/off button. So three in total.
Click to expand...
Click to collapse
as far as i know, when im unlock the phone, it unlock the recovery mode so i can access it by volume up + power instead of the phone picture.
i want for now stay with the stock recovery and not flash a custom one
Mm, you could use the phrase "fastboot reboot recovery". If that doesn't work, flash the latest Global beta and try again both ways.
If that also doesn't work, recheck if the phone is really unlocked (sometimes Xiaomi phones relock after an update without any good reason).
You could also try to find the stock recovery and use it in the method in my first reply. But keep that for last, as I don't know for sure how that recovery reacts to such a thing. Although I can't think of a reason why it would go wrong, it's better to be save than sorry.

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