Develop Bugs

[Q] Display Brick?

I tried to root my N7 (2013) today and i ended up with a black screen.
I used these instructions, but got a bootloop on the Nexus Logo.
http://forum.xda-developers.com/showthread.php?t=2382051
So i tried to do a factory reset via TWRP, without luck (errors in twrp)
I couldn't even mount to get an ROM on the device.
Then i tried to do a factory restore with the *.img files from:
http://forum.xda-developers.com/showthread.php?t=2381582
Still no boot (only nexus logo).
So i tried to do a factory reset via the stock recovery.
After this all i got is an black screen.
First i thougt it was hardbricked. But i recognized that the device manager from windows 7 shows the device.
could not get adb to work while it shows "Android ADB Interface"
But if i turn it off and boot with volume down pressed i can get into bootloader ("android bootloader interface" at device manager)
And then i can connect via fastboot. but still nothing on the screen...
Is there more to restore than recovery/system/boot ? any display driver or kernel, so that the screen will start working again?
Otherwise i will go to the store and get me a new one.

Have you tried to reflash twrp? Or flash cwm instead? Mine didn't want to take twrp but flashed cwm without issues.
Sent from my SCH-I535 using Tapatalk 4

If you can get into bootloader (ie. fastboot sees the device), you should be able to at least throw the stock image back on there by running the included flash-all script provided by Google.
You should be able to replace the recovery as well. TWRP2 works nicely for me. Maybe download your copy again (http://techerrata.com/browse/twrp2/flo) and check the md5 has to make sure your download is good. Then flash with "fastboot flash recovery <*.img>". From there you can then install whatever you want.
As long as you can get into the bootloader, your options are many.

i just tried the flash-all script provided by google.
But still just a black screen...
I could flash a custom recovery, but i think this would not help the display problem.
if no one else have an idea for a solution i will lock the bootloader and bring it to the store tomorrow.
edit: got a new one. already rooted and with working twrp.

[Q] HELP! Stuck in TWRP boot loop!

Howdy Everyone,
So just tried rooting my new m8 and now I'm stuck endlessly booting into TWRP. I thought I did everything correctly: Unlocked the bootloader, installed the USB drivers, installed the ADB fastboot drivers and then flashed twrp 2.7.0.3. I get to the the htc logo screen/warning and, bam, back to twrp everytime.
Does anyone know how to fix this??? The last time i was rooting and installing custom mods was back in samsung galaxy s2 days, so my knowledge is a little dated. Please help!!

Try flashing the recovery again. Download it from the link provided here and confirm the md5 checksum for the zip file.
http://forum.xda-developers.com/showthread.php?t=2694564
Sent from my HTC One_M8 using XDA Premium 4 mobile app

PirateP3t3 said:
Howdy Everyone,
So just tried rooting my new m8 and now I'm stuck endlessly booting into TWRP. I thought I did everything correctly: Unlocked the bootloader, installed the USB drivers, installed the ADB fastboot drivers and then flashed twrp 2.7.0.3. I get to the the htc logo screen/warning and, bam, back to twrp everytime.
Does anyone know how to fix this??? The last time i was rooting and installing custom mods was back in samsung galaxy s2 days, so my knowledge is a little dated. Please help!!
Click to expand...
Click to collapse
some reason doing twrp from terminal on hte m8 gets us stuck (it did for me at least.)
just reflash the insecure boot image.. fastboot flash boot blah.img
that should get you back up

PirateP3t3 said:
Howdy Everyone,
So just tried rooting my new m8 and now I'm stuck endlessly booting into TWRP. I thought I did everything correctly: Unlocked the bootloader, installed the USB drivers, installed the ADB fastboot drivers and then flashed twrp 2.7.0.3. I get to the the htc logo screen/warning and, bam, back to twrp everytime.
Does anyone know how to fix this??? The last time i was rooting and installing custom mods was back in samsung galaxy s2 days, so my knowledge is a little dated. Please help!!
Click to expand...
Click to collapse
I encountered this issue as well. I'm almost certain that when you were flashing recovery, you used this command "fastboot flash boot recovery.img".
The right command should be "fastboot flash recovery recovery.img".
To rectify the issue look for a tread that has the boot.img for your specific M8 model and flash boot back using " fastboot flash boot boot.img".
This should fix the issue you are having

darll said:
I encountered this issue as well. I'm almost certain that when you were flashing recovery, you used this command "fastboot flash boot recovery.img".
The right command should be "fastboot flash recovery recovery.img".
To rectify the issue look for a tread that has the boot.img for your specific M8 model and flash boot back using " fastboot flash boot boot.img".
This should fix the issue you are having
Click to expand...
Click to collapse
Forgot to come back and update this thread, but this is exactly what I did and it worked!!! Now happily rooted and running.
Thanks for the help!

PirateP3t3 said:
Forgot to come back and update this thread, but this is exactly what I did and it worked!!! Now happily rooted and running.
Thanks for the help!
Click to expand...
Click to collapse
I followed the instructions on the TWRP site:
Download the above file. Save it to the root of your /sdcard directly (internal memory only) and rename it to twrp.img
Launch terminal emulator or connect to your computer and open an adb shell, then type the following:
su
dd if=/sdcard/twrp.img of=/dev/block/mmcblk0p43
Then reboot to complete installation.
But that left me in a TWRP bootloop. Can you please give me step by step instructions on how to get out of this bootloop?
Thanks!

First off, being a noob and using dd without even knowing what partiton you're writing to is extremely dangerous.
Just use fastboot.
plug phone into PC in fastboot mode.
Code:
fastboot flash recovery twrpfilename.img
fastboot erase cache
on phone go back to hboot, select, recovery
In TWRP go to wipe, then swipe for a factory reset (Advanced wipe cannot properly wipe cache and dalvik after fastboot erase cache)
then go to advanced, select cache, dalvik and system and swipe to wipe those partitions.
then go to install, select the rom on your phone and flash. follow on screen instructions.
If you don't have the rom on your phone for whatever reason,
connect your phone, while in TWRP to your PC then, using adb on your PC
Code:
adb push romfilename.zip /sdcard/
Wait until it completes with bytes sent.
Then flash using method listed above.
Be careful if you want to keep your phone. I stress this, if you don't know what a command you are issuing does, exactly, DO NOT DO IT until you look it up and understand what you are doing. There is great risk even when you know what you're doing. There's a LOT more when you don't.

exad said:
First off, being a noob and using dd without even knowing what partiton you're writing to is extremely dangerous.
Just use fastboot.
plug phone into PC in fastboot mode.
Code:
fastboot flash recovery twrpfilename.img
fastboot erase cache
on phone go back to hboot, select, recovery
In TWRP go to wipe, advanced, select cache, dalvik and system
then go to install, select the rom on your phone and flash. follow on screen instructions.
If you don't have the rom on your phone for whatever reason,
connect your phone, while in TWRP to your PC then, using adb on your PC
Code:
adb push romfilename.zip /sdcard/
Wait until it completes with bytes sent.
Then flash using method listed above.
Be careful if you want to keep your phone. I stress this, if you don't know what a command you are issuing does, exactly, DO NOT DO IT until you look it up and understand what you are doing. There is great risk even when you know what you're doing. There's a LOT more when you don't.
Click to expand...
Click to collapse
Thanks for the detailed instructions. I opened fastboot on my PC with phone plugged in and entered the code but the cmd prompt just says <waiting for device>

Do you have the HTC drivers installed on your PC with HTC sync uninstalled?
Does it say fastboot USB on your phone?
Sent from my HTC One_M8 using xda app-developers app

Update: I ended up just installing the Viper ROM and the system rebooted fine. It's strange that I couldn't reboot the device to get out of recovery without having to install a custom ROM.
Sent from my HTC6525LVW using Tapatalk

No it's not. You flashed recovery to the boot partition.
Sent from my HTC One_M8 using xda app-developers app

How do i fix TWRP Bootloop on my HTC explorer a310e... ?
How do i fix TWRP Bootloop on my HTC explorer a310e... ?
I hav custom cm11 Kitkat ROM installed on it...
but after I installed the rom, and again tried to reboot
into TWRP recovery, it is just stuck on the blue color
TEAMWIN screen... Please help how to fix it...!

HELP PLEASE
I pressed factory reset on my cm13 rom htc one m8 with twrp and now its just stuck flashing the teamwin logo and i cant do anything, i tried using fastboot but it cant see the device.

Maxxour said:
HELP PLEASE
I pressed factory reset on my cm13 rom htc one m8 with twrp and now its just stuck flashing the teamwin logo and i cant do anything, i tried using fastboot but it cant see the device.
Click to expand...
Click to collapse
You need cwm recovery to factory reset from cm roms.
Also you need to be in FASTBOOT mode for it to detect your device.
Boot to fastboot, erase cache, reinstall twrp.
Next time reset/wipe from recovery.

ashyx said:
You need cwm recovery to factory reset from cm roms.
Click to expand...
Click to collapse
cwm recovery or cm recovery?

[Q] Can't enter recovery Verizon m8

Hello guys, I've had a problem with my phone since flashing 5.0 firmware months ago but I'm just now getting to fixing it.
I have twrp recovery and some 5.0.1 rom that was in beta awhile ago. Everytime I boot into twrp in boots right into fastboot, whatever it's called, after about 5 seconds, so I can't flash any roms, which I think is the problem since it's pretty buggy.
Another thing is that Whenever I charge the phone while it's off, it boots into bootloader and therefore stops charging. Anyway I can fix my recovery without recovery?
This is Verizon htc one m8.
Thanks guys.
Edit: tried using twrp app to reinstall recovery but it boots into bootloader instead.

Fire n mage said:
Hello guys, I've had a problem with my phone since flashing 5.0 firmware months ago but I'm just now getting to fixing it.
I have twrp recovery and some 5.0.1 rom that was in beta awhile ago. Everytime I boot into twrp in boots right into fastboot, whatever it's called, after about 5 seconds, so I can't flash any roms, which I think is the problem since it's pretty buggy.
Another thing is that Whenever I charge the phone while it's off, it boots into bootloader and therefore stops charging. Anyway I can fix my recovery without recovery?
This is Verizon htc one m8.
Thanks guys.
Edit: tried using twrp app to reinstall recovery but it boots into bootloader instead.
Click to expand...
Click to collapse
Of course there's a way. Just like the way you first installed a custom recovery. I will give you instructions in case you've forgotten, or if the phone was pre-rooted when you got it.
Download the latest TWRP from here onto your PC.
When the download is finished, rename it to recovery.img and place it into your fastboot folder.
Hook up your phone to your PC, get into ADB/fastboot, and issue the command fastboot flash recovery recovery.img
Then when it's done fastboot reboot
You should now have a working TWRP recovery.

xunholyx said:
Of course there's a way. Just like the way you first installed a custom recovery. I will give you instructions in case you've forgotten, or if the phone was pre-rooted when you got it.
Download the latest TWRP from here onto your PC.
When the download is finished, rename it to recovery.img and place it into your fastboot folder.
Hook up your phone to your PC, get into ADB/fastboot, and issue the command fastboot flash recovery recovery.img
Then when it's done fastboot reboot
You should now have a working TWRP recovery.
Click to expand...
Click to collapse
Had to use my brother computer and set it up since I got a mac. Thanks for your reply, and sorry for the double post, I installed via fastboot, and I can confirm the most updated version was pushed to the device, but it still goes right into fastboot after booting into recovery.img
Edit: Did that fastboot erase cache thing in the command prompt and now it works. Thanks for telling me the commands for cmd again!

Fire n mage said:
Had to use my brother computer and set it up since I got a mac. Thanks for your reply, and sorry for the double post, I installed via fastboot, and I can confirm the most updated version was pushed to the device, but it still goes right into fastboot after booting into recovery.img
Edit: Did that fastboot erase cache thing in the command prompt and now it works. Thanks for telling me the commands for cmd again!
Click to expand...
Click to collapse
Oh Crap! I forgot to add that one. :silly:Erase cache is obviously needed. Sorry.

Soft bricked

Hello everyone, today I installed TWRP recovery, it went fine and I am not new to install custom roms, custom recoveries, etc. but this got my phone messed up. It was working perfectly fine and then I turned it off in the night and in the morning, it just got stuck in a bootloop, and knowing me of course, I forgot to create a backup as I installed TWRp. So, is there any kind fellow out there that has a TWRP backup at hand for the ZE551ML?

Just to get the order correct...
Flashed TWRP - No problem
Rebooted to system - No problem
System worked?
Turned off phone
Bootloop on power on?
Is this a bootloop, or does it just sit on the Asus screen? Does it get to the actual boot animation, or are you on the splash screen?

Harfainx said:
Just to get the order correct...
Flashed TWRP - No problem
Rebooted to system - No problem
System worked?
Turned off phone
Bootloop on power on?
Is this a bootloop, or does it just sit on the Asus screen? Does it get to the actual boot animation, or are you on the splash screen?
Click to expand...
Click to collapse
I am getting to the boot animation with the gears turning and then error comes up and boots me into TWRP. The problem is, the Bootloader will not come up so I can do the fastboot flashing, TWRP comes up instead. It comes up and I didn't overwrite the bootloader with TWRP. Problem is I can't access fastboot commands.

Lurkingintheshadows said:
I am getting to the boot animation with the gears turning and then error comes up and boots me into TWRP. The problem is, the Bootloader will not come up so I can do the fastboot flashing, TWRP comes up instead. It comes up and I didn't overwrite the bootloader with TWRP. Problem is I can't access fastboot commands.
Click to expand...
Click to collapse
Give me a few minutes. I'll get you a TWRP flashable boot.img zip.

Try flashing this in TWRP. You might need to sideload it onto your phone if you can't boot into system.

Harfainx said:
Try flashing this in TWRP. You might need to sideload it onto your phone if you can't boot into system.
Click to expand...
Click to collapse
Thank you. But, it won't flash, I've tried about every option now. I think I'm just going to see if I can get a replacement. 2.19 was always causing me problems to install and then now that I finally got it on my phone, I couldn't install another 2.19 on top of it or downgrade. Guess this phone is done for until CM12 gets released. Thanks for the help but it seems it can't be recovered at this point.

Lurkingintheshadows said:
Thank you. But, it won't flash, I've tried about every option now. I think I'm just going to see if I can get a replacement. 2.19 was always causing me problems to install and then now that I finally got it on my phone, I couldn't install another 2.19 on top of it or downgrade. Guess this phone is done for until CM12 gets released. Thanks for the help but it seems it can't be recovered at this point.
Click to expand...
Click to collapse
If you lurk on these forums, there are some Intel flashing tools I've seen that can help you recover from a soft brick.

I am stuck too!
I was in stock recovery and did a cache wipe. It took forever and wouldn't come out of it so i powered it off and tried booting. It got stuck on bootloop. phone is asus zenfone 2 Z00A. It is intel chipset. please help me out.
the worst part is that i cant get into fastboot or recovery modes so i am completely stuck! please help me out.
when i try to get into fastboot mode with vol up+ power key it vibrates but nothing is displayed.
if i just power it on its stuck on bootloop.
i can't get into recovery and fastboot bcoz its at the same place.
can i use adb commands or fastboot commands somehow?
i can maybe use adb reboot recovery to get into recovery and then i can do a wipe and flash new stuff.
please help me out.
UPDATE: I found out u can use adb reboot recovery while on the asus bootanimation.
i tried adb reboot recovery and now getting a flashing android sleeping bot with error!
can't use adb or fastboot commands now though
now in even bigger mess. after using adb reboot recovery, i can't get to bootanimation either.
just stuck at flashing android sleeping bot with error.
can't get to bootloader or fastboot or anything!
Please any suggestions. I'm dying here to fix it.
I have a adb backup.
i couldn't take a nandroid backup. i just entred recovery and wiped cache first. after doing that i was going to flash twrp and then using twrp take a nandroid backup and flash a custom rom. but it got stuck at cache wipe and i powered it off and the whole mess.:
Finally entered bootloader with fastboot now working!
Content and satisfied

I_am_sid said:
I was in stock recovery and did a cache wipe. It took forever and wouldn't come out of it so i powered it off and tried booting. It got stuck on bootloop. phone is asus zenfone 2 Z00A. It is intel chipset. please help me out.
the worst part is that i cant get into fastboot or recovery modes so i am completely stuck! please help me out.
when i try to get into fastboot mode with vol up+ power key it vibrates but nothing is displayed.
if i just power it on its stuck on bootloop.
i can't get into recovery and fastboot bcoz its at the same place.
can i use adb commands or fastboot commands somehow?
i can maybe use adb reboot recovery to get into recovery and then i can do a wipe and flash new stuff.
please help me out.
UPDATE: I found out u can use adb reboot recovery while on the asus bootanimation.
i tried adb reboot recovery and now getting a flashing android sleeping bot with error!
can't use adb or fastboot commands now though
now in even bigger mess. after using adb reboot recovery, i can't get to bootanimation either.
just stuck at flashing android sleeping bot with error.
can't get to bootloader or fastboot or anything!
Please any suggestions. I'm dying here to fix it.
I have a adb backup.
i couldn't take a nandroid backup. i just entred recovery and wiped cache first. after doing that i was going to flash twrp and then using twrp take a nandroid backup and flash a custom rom. but it got stuck at cache wipe and i powered it off and the whole mess.:
Finally entered bootloader with fastboot now working!
Content and satisfied
Click to expand...
Click to collapse
how did you get fastboot working? I can get into bootloader, but cant get my pc to connect with my zenfone2. can't use any adb cmd it would just say "error: can't find devices"

I_am_sid said:
I was in stock recovery and did a cache wipe. It took forever and wouldn't come out of it so i powered it off and tried booting.
Click to expand...
Click to collapse
Just a reminder to everyone, never force shutdown the Phone during a cache wipe procedure, it takes a long time but it finishes.
When I did it on my ZF2, I thought it was taking too long, but I did a search here and found out about it taking long before it was too late.
I'm glad you could recover yours. :good:

I shut mine down because it took too long. Wouldn't start up again. Had to send it in for RMA. Asus Canada reset the OS. I'll never do that again.
Sent from my ASUS_Z00AD using XDA-Developers mobile app

ikkuy said:
how did you get fastboot working? I can get into bootloader, but cant get my pc to connect with my zenfone2. can't use any adb cmd it would just say "error: can't find devices"
Click to expand...
Click to collapse
Dude you can never use adb when in bootloader.
That's why you have fastboot.
just type
fastboot devices
you will get your device.
if you don't then download intel drivers. You will get them in asus website.
if you are stuck without custom recovery i would suggest you to download system image (~1.5Gb) from asus website.
just search for asus zenfone 2 and go to official asus site. in downloads tab you should find both drivers and system image.
download the latest one.
See if you can get into stock recovery.
when in bootloader press vol down and go to recovery mode.
you will see a sleeping android bot with error.
press power key + vol down you will get a list.
choose factory reset and then after wipe is complete choose sideload from adb.
connect your phone and then in adb type
adb sideload filename.zip
obviously place file in your platform-tools folder and replace filename with whatever its name is.
it will take a while and you will get back your system.
---------- Post added at 07:37 PM ---------- Previous post was at 07:21 PM ----------
Marteicos said:
Just a reminder to everyone, never force shutdown the Phone during a cache wipe procedure, it takes a long time but it finishes.
When I did it on my ZF2, I thought it was taking too long, but I did a search here and found out about it taking long before it was too late.
I'm glad you could recover yours. :good:
Click to expand...
Click to collapse
Thanks!
It took a lot of time though.
For anyone stuck,
I first got fastboot working. and then i flashed stock recovery and boot.
got into stock recovery and sideloaded system img into it.
After it booted back into asus stock rom i unlocked bootloader, placed twrp in sdcard and got straight into fastboot again installed twrp and then did a wipe and went ahead and flashed ROM and Gapps. Working fine.
Update:
To get to bootloader:
i was stuck in a bootloop.
When at asus boot animation i connected USB cable and quickly typed
adb reboot bootloader
which seemed to work for me. Though i couldn't get into recovery.
So i had to flash stock recovery again.

Need some assistance with ADB & Pixel XL

Ok, first off, I have everything I needed installed, I have a Verizon model, its unlocked, rooted, etc... did all that good stuff and was running great.
Problem I'm having now is, well that last thing I done was installed 7.1.2 which was a week or so ago. I'm still running stock but now I noticed I try and go to recovery and I get a No Command, so I figured TWRP for some reason didn't get installed again.
Its crazy and confusing how twrp installs but erases supersu, then supersu installs but erases twrp or whatever, I don't understand that at all. so I'm figuring that's what happened and twrp is not installed considering I'm getting the "No Command" when I try to enter recovery, correct??
Next, I got my phone connected to computer through usb and ADB see its fine as long as the phone is ON, when I reboot to bootloader, ADB doesn't see that phone any more.
What I was planning on doing was reinstalling twrp so I have a recovery, but I cant do that if ADB isn't seeing my phone. So I'm kind of stuck at the moment, I tried updating drivers, blah bla
and don't know what else to try so I figured Id post here again.
If twrp is installed and the no command is something else please help me through to get it back to where I need it to be, I appreciate it.
Thanks!

I think when you're in bootloader you have to use fastboot instead of adb. Try "fastboot devices" and see if it lists anything. You may also need to unplug/replug the USB cable after the phone reboots.
Sent from my Pixel XL using Tapatalk

disco1224 said:
Ok, first off, I have everything I needed installed, I have a Verizon model, its unlocked, rooted, etc... did all that good stuff and was running great.
Problem I'm having now is, well that last thing I done was installed 7.1.2 which was a week or so ago. I'm still running stock but now I noticed I try and go to recovery and I get a No Command, so I figured TWRP for some reason didn't get installed again.
Its crazy and confusing how twrp installs but erases supersu, then supersu installs but erases twrp or whatever, I don't understand that at all. so I'm figuring that's what happened and twrp is not installed considering I'm getting the "No Command" when I try to enter recovery, correct??
Next, I got my phone connected to computer through usb and ADB see its fine as long as the phone is ON, when I reboot to bootloader, ADB doesn't see that phone any more.
What I was planning on doing was reinstalling twrp so I have a recovery, but I cant do that if ADB isn't seeing my phone. So I'm kind of stuck at the moment, I tried updating drivers, blah bla
and don't know what else to try so I figured Id post here again.
If twrp is installed and the no command is something else please help me through to get it back to where I need it to be, I appreciate it.
Thanks!
Click to expand...
Click to collapse
Hello,
@stevexyz0 statement is correct, you have to use fastboot commands in bootloader...
You said you installed 7.1.2
How did you proceed? OTA, flash-all method? TWRP likely got overwritten by stock 7.1.2 boot.img since recovery is now part of the boot.img...
If you want to reinstall TWRP and root, proceed this way:
Download SuperSU and place it in the root of internal storage
https://download.chainfire.eu/1021/SuperSU/SR3-SuperSU-v2.79-SR3-20170114223742.zip
Download TWRP IMG and ZIP RC1:
https://dl.twrp.me/marlin/twrp-3.0.2-0-RC1-fastboot-marlin.img
https://dl.twrp.me/marlin/twrp-pixel-installer-marlin-3.0.2-0-RC1.zip
Place the zip in the root of internal storage
Reboot to bootloader,
Open a command prompt and Boot TWRP RC1 IMG:
fastboot boot twrp-3.0.2-0-RC1-fastboot-marlin.img
Once your phone is in TWRP, choose install and install twrp-pixel-installer-marlin-3.0.2-0-RC1.zip
After that, install SuperSU zip.
Reboot, done.
Cheers...