Develop Bugs

Soft Bricked i never seen!

Hello, I was attempting to install CM 12.1 on my M8 and while trying to change the kernel to SkyDragon it started to go into a bootloop. While not really thinking i wiped everything (i seriously mean everything) with TWRP. So i rebooted my phone and now its been on the White HTC logo screen with the build warning at the bottom. I attempted to shutdown the phone and go back into TWRP but no luck. Any help? Thanks! :good:

Hold power + vol up to force a reboot (could take up to 20 seconds). AS SOON AS THE SCREEN GOES BLACK slide from vol up to vol down. This will take you to your bootloader, where you can enter recovery (choose hboot, the option is in there) and restore a backup.

Help with brick?

Hi I was running the Cyanogen Mod Nightly for my phone, and hadn't updated it for about a week. When I went in to my settings to update it, I downloaded the latest one and when it was done it prompted me to start it, so I did. It got to about 2%, and after that it's been looping in boot. The screen flashes on and off instantly every 5 seconds. Power + Volume Up works, it shows the HTC screen and says it's going into recovery, but then it just loops in boot again.
Is there any fix/hope for my phone?

Press power + vol up, and as soon as the screen goes black, press and hold power + vol down. You will boot into the bootloader. from here you can flash an RUU to go back to stock

Khizar Amin said:
Press power + vol up, and as soon as the screen goes black, press and hold power + vol down. You will boot into the bootloader. from here you can flash an RUU to go back to stock
Click to expand...
Click to collapse
So I tried doing this, but nothing happened.
I did however, fix my problem, by holding down Power + Volume Up until it showed the initial "Booting into recovery" screen (which was failing), but kept holding Power + Volume Up until the Battery Charging screen showed up (I had it plugged into my PC). Once I let go, it rebooted the phone normally, and started up Cyanogenmod. Now the phone works, so I am going to back up my data, and switch to a non-nightlies version (or just never update).
Thank you!

Next time if you are in a bootloop, just holding vol down during the next restart cycle will get you to bootloader.
If the buttom combo (Power+vol up to force a restart, then just hold vol down to go to bootloader) doesn't work, its virtually always due to getting the timing wrong (either not pressing vol down soon enough, or letting go too early). And the fact it was looping makes the timing tricky. But holding vol down during a bootloop (restart) will always get you to bootloader.

redpoint73 said:
Next time if you are in a bootloop, just holding vol down during the next restart cycle will get you to bootloader.
If the buttom combo (Power+vol up to force a restart, then just hold vol down to go to bootloader) doesn't work, its virtually always due to getting the timing wrong (either not pressing vol down soon enough, or letting go too early). And the fact it was looping makes the timing tricky. But holding vol down during a bootloop (restart) will always get you to bootloader.
Click to expand...
Click to collapse
I already tried that, it would automatically go back into a bootloop. And I tried your second option, which also didnt work. The only way I personally was able to fix it was having it plugged in, holding Volume Up + Power through the bootloader screen (which would crash) until the battery icon with the red disclaimer text showed up. Then it would reboot without going to bootloader (Pretty sure the Cyanogenmod tried to get it to this and failed).
Still cant get it to update without crashing so im just going to flash a new rom.

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

Bricked

My 7-year old was playing a game on my wife's 3a XL tonight and it shut off. Now it's stuck in a bootloop.
I tried to boot into Recovery, but was greeted with the busted android screen. So I tried to boot into Rescue, with the same result. The bootloader is still locked, so all my attempts to flash factory images or boot into stock boot, I am greeted with the "not allowed" error.
Any ideas how I can recover this, or is it completely bricked?

If your bootloader is still locked you should be able to sideload the stock OTA. I've never heard of not being able to boot to stock recovery either. What method did you use to get there?

derekr44 said:
My 7-year old was playing a game on my wife's 3a XL tonight and it shut off. Now it's stuck in a bootloop.
I tried to boot into Recovery, but was greeted with the busted android screen. So I tried to boot into Rescue, with the same result. The bootloader is still locked, so all my attempts to flash factory images or boot into stock boot, I am greeted with the "not allowed" error.
Any ideas how I can recover this, or is it completely bricked?
Click to expand...
Click to collapse
When you reach that screen on recovery you hold the power button and tap the vol + button and your options should show up. Just factory reset the device.

luigi90210 said:
When you reach that screen on recovery you hold the power button and tap the vol + button and your options should show up. Just factory reset the device.
Click to expand...
Click to collapse
Thanks. Didn't know how to bring the menu up.

ctfrommn said:
If your bootloader is still locked you should be able to sideload the stock OTA. I've never heard of not being able to boot to stock recovery either. What method did you use to get there?
Click to expand...
Click to collapse
I tried to boot to TWRP but couldn't because the bootloader is locked. So I tried using ADB commands to sideload through Rescue, but it only said "error: closed".
Ended up doing a factory reset. (running now)
Haven't seen you in awhile

Well well.... thought i recognized that username. Good to see you again.

Bricked help
I cannot get my phone into fastboot or recovery. It stuck on the white google loading screen loop. I hold the power and volume down and it goes into fastboot but if I release the volume down button to scroll (while holding the power button) it will then go black and go back to the google white loading screen. If I hold down the volume down button and release the power button it will restart back to the fastboot page. If I release both then it will restart and go back to the white google screen. If I do power and volume up it goes to the "andriod no command" sreen then back to the googe white screen. In sum, is my phone recoverable?

brettscott648 said:
I cannot get my phone into fastboot or recovery. It stuck on the white google loading screen loop. I hold the power and volume down and it goes into fastboot but if I release the volume down button to scroll (while holding the power button) it will then go black and go back to the google white loading screen. If I hold down the volume down button and release the power button it will restart back to the fastboot page. If I release both then it will restart and go back to the white google screen. If I do power and volume up it goes to the "andriod no command" sreen then back to the googe white screen. In sum, is my phone recoverable?
Click to expand...
Click to collapse
When in fastboot, don't hold the power button down to scroll. Is your bootloader locked?

Tulsadiver said:
When in fastboot, don't hold the power button down to scroll. Is your bootloader locked?
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Click to collapse
I'm guessing its locked because the phone is completely stock. When I get to fast boot I dont hold down the power button, but if I hit the volume up or down it instantly goes back to the google white screen and starts the loop over.

brettscott648 said:
I'm guessing its locked because the phone is completely stock. When I get to fast boot I dont hold down the power button, but if I hit the volume up or down it instantly goes back to the google white screen and starts the loop over.
Click to expand...
Click to collapse
When on the bootloader screen can you fastboot a full image to the phone?
Said another way, try to download the full Google image.. not the ota... Setup a computer with fastboot and driver's boot the phone into bootloader mode and try to run the flashall.bat

brettscott648 said:
I cannot get my phone into fastboot or recovery. It stuck on the white google loading screen loop. I hold the power and volume down and it goes into fastboot but if I release the volume down button to scroll (while holding the power button) it will then go black and go back to the google white loading screen. If I hold down the volume down button and release the power button it will restart back to the fastboot page. If I release both then it will restart and go back to the white google screen. If I do power and volume up it goes to the "andriod no command" sreen then back to the googe white screen. In sum, is my phone recoverable?
Click to expand...
Click to collapse
Try-Once in bootloader scroll to recovery and press power button. When you see Android on his side hold power button and press volume up button. You should now be in stock recovery. From there you can adb or factory reset.
Edit- to get to bootloader power off phone then hold power and volume down buttons at the same time.