Develop Bugs

Phone stuck in TWRP recovery lock screen and can't force power-down

I am in a bit of a predicament. When I tried power-off my phone from the TWRP reset menu TWRP froze up. I could click any of the buttons on screen (the clicking/tapping animation did go off) but got no repsonse. When I tried to do a forced power-off by holding the power button, the only thing that happened was the screen locked. Now I am stuck on the lock screen because for some reason the phone won't unlock when I slide to unlock it. Am I screwed and will have to wait until the battery goes dead to be able to get back to the bootloader? I tried to flash TWRP 2.8.6.0 inside TWRP but it flashed to the boot partition instead. I have a backup but I need to first be able to flash the new recovery to restore it.

Press vol up+vol down + power button for 15 sec or more
When screen goes black
Press voldown + power to enter bootloader

Thanks for the quick response. Sadly I ended up calling it a night soon after posting so I ended up letting the battery die.

Stuck at boot - can't boot to recovery

I just installed flashify and TWRP. When I let flashify reboot the phone, it stuck at the main boot logo. I can get it to briefly reboot with vol down + power, but it just hangs back at the same screen. I tried holding vol up + power + home during that brief period of time but nothing happened.
Any ideas?

hep
same here
Horror Business said:
I just installed flashify and TWRP. When I let flashify reboot the phone, it stuck at the main boot logo. I can get it to briefly reboot with vol down + power, but it just hangs back at the same screen. I tried holding vol up + power + home during that brief period of time but nothing happened.
Any ideas?
Click to expand...
Click to collapse

I'm experiencing this too, I installed stock firmware and it is still doing this. I need to access recovery so I can clear cache and partition but this damn phone refuses to get to recovery mode. It'll go to download mode no problem, but trying to get to recovery mode is just impossible this way. Anybody???

Possibly bricked HTC One M8

Ok,
Was installing the viper rom on my M8, and for some reason, now my phone is stuck in a boot loop. Obviously the install went pear shaped. But now I cant even boot the phone into recovery mode.
Boot sequence now is: Google lettering appears on screen, followed by green android with the blue spinning shape in its chest, then the green android with the red triangle and black exclamation mark appears and the whole thing loops again.
When plugged into the PC its not recognized so I cant use adb to boot into recovery or try load another rom/wipe cache etc.
I've tried all combinations of power button & volume up/down to break the boot sequence, no joy.
Any ideas how to resolve, or do I have a very expensive paper-weight?
Cheers,
sombaht

Rest assured, if the screen comes on, the phone isn't bricked.
Red triangle with exclamation point is stock recovery.
What was your exact sequence, in detail? From bootloader unlock, install custom recovery, etc.
Was the phone on Lollipop when you unlocked the bootloader?
To reboot into bootloader (not recovery, there is no button sequence to boot directly into recovery on this device):
1) Hold power and vol up for several seconds to force a reboot
2) The moment the screen goes black to reboot, let go of the buttons, and only hold vol down
3) Don't let go of vol down until you are on the bootloader screen
4) Failure to get into bootloader is virtually always user error. You either started pressing vol down too late, or let go of it too early. Just repeat until you get it right.
But from there, as mentioned it sounds like you are on stock recovery. You will probably need to flash TWRP again via fastboot in order to do much more.

Did you flash a custom recovery before you flashed the rom?? Can you boot in the bootloader mode (turn of Device completely- turn on again and hold volume down all the time.. then you should be in the bootloader)?
And your phone is not really bricked
Edit: damn to slow should not write on the phone

sombaht said:
Ok,
Was installing the viper rom on my M8, and for some reason, now my phone is stuck in a boot loop. Obviously the install went pear shaped. But now I cant even boot the phone into recovery mode.
Boot sequence now is: Google lettering appears on screen, followed by green android with the blue spinning shape in its chest, then the green android with the red triangle and black exclamation mark appears and the whole thing loops again.
When plugged into the PC its not recognized so I cant use adb to boot into recovery or try load another rom/wipe cache etc.
I've tried all combinations of power button & volume up/down to break the boot sequence, no joy.
Any ideas how to resolve, or do I have a very expensive paper-weight?
Cheers,
sombaht
Click to expand...
Click to collapse
My friend, did you flash it using stock recovery or custom recovery? if you did flash it using stock recovery you will meet this kind of problems. I suggest you try power button and down if im not mistaken and go to hboot and fastboot usb and connect to adb, type fastboot devices in cmd if it detects your device then you can flash TWRP , find any kind of custom rom for M8 and flash it. I also assume your bootloader is unlocked and driver is installed in your PC.

Problem solved. Redpoint73's key press combination worked!
Cheers,
sombaht

phone factory reset

Hello All,
my phone was bootloader unlocked, rooted, installed with custom ROM and custom recovery.
Selling it to my friend, I did a phone reset in the phone setting menu.
Seems like I have done the wrong way? should have done in the custom recovery menu (TWRP)?
Now seems like I can not boot up to recovery mode anymore, by pressing power & volume down button, it always boot up straight to normal state.
Questions:
Have I lost the custom recovery?
How do I re-install? go thru ADB mode?
Thanks!

That button combo reboots to bootloader, not recovery (which doesn't have a button combo to boot directly to). Its a subtle difference (recovery vs. bootloader), but important. Its nearly impossible for the phone to not be able to boot into bootloader (if the bootloader was damaged, you wouldn't even have the screen coming on). If that is what you are experiencing (can't get into bootloader), you are probably just doing the button combo incorrectly: Hold vol up and power buttons until the phone reboots. When the screen goes black, but before the white HTC logo screen appears, let go of those buttons, and only hold vol down. Don't let go of vol down until you see the bootloader screen. If the phone boots normally, you likely just got the timing wrong, either started pressing vol down too late, or let go of it too early. Just repeat until you get into bootloader.
Alternately, within OS (and debugging enabled) you can do:
adb reboot-bootloader
or
adb reboot recovery
Now, if you get into bootloader, select recovery, and TWRP still doesn't boot. Then yes I'd recommend fastboot erase cache, and re-install TWRP by fastboot.

Pardon me,
I used the wrong term, I mean boot to bootloader.
I also pressed the wrong buttons, vol down and power instead of vol UP and power.
Many thanks for your advise.

Stuck in Bootloop, reboots every 15 seconds, holding power button does not stop it

The first problem I encountered while rooting my phone was that TWRP wouldn't stick, even though I didn't choose read only (ie i allowed it to make system modifications on the first TWRP boot) after rebooting
and booting back into recovery I would boot into stock recovery, instead of TWRP. So I tried flashing twrp, booting into it and rooting the phone, which was successful!
THE ROOT was successful, TWRP still didn't stick, every time I want to boot into TWRP I have to boot into it via fastboot.
Getting to the main problem, I booted into twrp, flashed a custom rom and got stuck in a bootloop while rebooting. It reboots every 15 seconds, I have kept the power button pressed for almost 2 minutes it doesn't stop the bootloop, I tried other combinations of vol buttons and power buttons does nothing.
One weird thing is that while it's in the loop I just have to press the vol down button and it boots into fastboot (as opposed to both the power button and vol down) when I boot into fastboot it stays there for about 6-7 seconds before rebooting, I tried booting into twrp through fastboot, but before I am able to enter the decryption password to start twrp, the phone reboots.
Should I let it run out of battery? will that stop the bootloop? I have a backup in twrp but I can't access twrp!
Does anyone have a solution?
[update] I let it run out of battery and on charging it continued the bootloop, with great difficulty i managed to install stock img file but the device just wont quit the bootloop

LeonDsouza123 said:
The first problem I encountered while rooting my phone was that TWRP wouldn't stick, even though I didn't choose read only (ie i allowed it to make system modifications on the first TWRP boot) after rebooting
and booting back into recovery I would boot into stock recovery, instead of TWRP. So I tried flashing twrp, booting into it and rooting the phone, which was successful!
THE ROOT was successful, TWRP still didn't stick, every time I want to boot into TWRP I have to boot into it via fastboot.
Getting to the main problem, I booted into twrp, flashed a custom rom and got stuck in a bootloop while rebooting. It reboots every 15 seconds, I have kept the power button pressed for almost 2 minutes it doesn't stop the bootloop, I tried other combinations of vol buttons and power buttons does nothing.
One weird thing is that while it's in the loop I just have to press the vol down button and it boots into fastboot (as opposed to both the power button and vol down) when I boot into fastboot it stays there for about 6-7 seconds before rebooting, I tried booting into twrp through fastboot, but before I am able to enter the decryption password to start twrp, the phone reboots.
Should I let it run out of battery? will that stop the bootloop? I have a backup in twrp but I can't access twrp!
Does anyone have a solution?
[update] I let it run out of battery and on charging it continued the bootloop, with great difficulty i managed to install stock img file but the device just wont quit the bootloop
Click to expand...
Click to collapse
1. Try flashing new recovery image using TWRP booted via fastboot.
2. Does your phone had contact with any fluid or was in place with high humidity level for longer time? Your power button is short circuited. In other words it is in pressed state all the time. I had same problem on my previous P2 when I came from 1h running session in light rain. Some sweat and/or water got inside my volume down button and same thing happened.
In my case the phone button recovered itself after drying and clicking it a lot of times

Kielbek said:
1. Try flashing new recovery image using TWRP booted via fastboot.
2. Does your phone had contact with any fluid or was in place with high humidity level for longer time? Your power button is short circuited. In other words it is in pressed state all the time. I had same problem on my previous P2 when I came from 1h running session in light rain. Some sweat and/or water got inside my volume down button and same thing happened.
In my case the phone button recovered itself after drying and clicking it a lot of times
Click to expand...
Click to collapse
I can't access TWRP as the phone doesn't give me enough time to enter the password for decryption, which is asked at the start every time you boot into TWRP, I get like 5 seconds in TWRP before the phone reboots
It is possible that the power button is spoilt as I have sweaty hands...

LeonDsouza123 said:
I can't access TWRP as the phone doesn't give me enough time to enter the password for decryption, which is asked at the start every time you boot into TWRP, I get like 5 seconds in TWRP before the phone reboots
It is possible that the power button is spoilt as I have sweaty hands...
Click to expand...
Click to collapse
That's the reason. I know that pain. You should try pressing that button with different pressure (but be careful) and move you finger while doing it. Maybe it will recover itself. If not you should find someone trusted who will open the phone and clean the buttons from the inside. It's a shame that Lenovo just left this construction vunerable like that.
After you get your P2 working properly again then just buy case that will cover whole buttons to prevent situations like this next time. Also make sure to clean it regullary inside.

Help me
If you found your way out then help me