Database Info

Phone stuck at boot animation

I installed a font with FontInstaller and I rebooted my phone, but now it won't pass the boot animation. Please help?

dextermorganx said:
I installed a font with FontInstaller and I rebooted my phone, but now it won't pass the boot animation. Please help?
Click to expand...
Click to collapse
go to your recovery and reflash your rom. thatll fix it.

How do I exactly do that? I don't have my custom rom ZIP in my phone anymore.

dextermorganx said:
How do I exactly do that? I don't have my custom rom ZIP in my phone anymore.
Click to expand...
Click to collapse
if you have a custom recovery, youll be able to mount your usb storage and transfer a rom zip. you do have one? if not you can fastboot flash or just boot a custom recovery.

I do have ClockworkMod Recovery v6.0.0.6 but it won't let me mount USB storage. The error says" Unable to open ums lunfile (No such file or directory)

dextermorganx said:
I do have ClockworkMod Recovery v6.0.0.6 but it won't let me mount USB storage. The error says" Unable to open ums lunfile (No such file or directory)
Click to expand...
Click to collapse
try flashing twrp recovery. or erase cwm recovery and reflash it.

I can't find a good version of twrp recovery for my phone, nor know I how to erase CWM recovery. I'm a noob, please help.
edit: i succeded. thanks, you're the best.

dextermorganx said:
I can't find a good version of twrp recovery for my phone, nor know I how to erase CWM recovery. I'm a noob, please help.
Click to expand...
Click to collapse
twrp recovery, select your device on the right(ns or ns4g) http://www.teamw.in/project/twrp2
just flash it in fastboot, no need to erase beforehand. in fastboot.. fastboot flash recovery recoveryfilename.img
---------- Post added at 06:14 PM ---------- Previous post was at 06:14 PM ----------
dextermorganx said:
edit: i succeded. thanks, you're the best.
Click to expand...
Click to collapse
oh sweetness

Even after reinstalling my rom, it still won't pass...

dextermorganx said:
Even after reinstalling my rom, it still won't pass...
Click to expand...
Click to collapse
im sorry, i forgot to write wipe first(factory reset). if you just flash on top, the bad file remains. wipe, then reflash the rom.

Succes. Working as a charm. Thank you very much.

dextermorganx said:
Succes. Working as a charm. Thank you very much.
Click to expand...
Click to collapse
youre welcome

[Q] Soft-Bricked - usual solutions don't work

Sorry, for bothering you with this but unfortunately, I have soft-bricked my phone. It's a WIND Canada HTC One S with S4 cpu, CID is GLOBA001 with HBOOT 1.14.0004.
I had Cyanogenmod 10 installed, ran in some problems, tried to find a solution (among others this: http://forum.xda-developers.com/showthread.php?t=1630459 didn't work) and bricked it: boot loop, unmountable /sdcard, no working recovery. I have tried for hours all the tips I found in the forums but none helped. I even downloaded a RUU but I couldn't install it (probably the wrong version).
Current state is: I can only get into the bootloader which is re-locked (by courtesy of one of my repair attempts). Connecting via USB to fastboot works. Nothing else, for all purposes the phone is clean, empty and oh so very much dead.
How do I proceed from here? In the end I want to have working version of Cyanogenmod back.
Thank you in advance, guys!

el_Harmakhis said:
Sorry, for bothering you with this but unfortunately, I have soft-bricked my phone. It's a WIND Canada HTC One S with S4 cpu, CID is GLOBA001 with HBOOT 1.14.0004.
I had Cyanogenmod 10 installed, ran in some problems, tried to find a solution (among others this: http://forum.xda-developers.com/showthread.php?t=1630459 didn't work) and bricked it: boot loop, unmountable /sdcard, no working recovery. I have tried for hours all the tips I found in the forums but none helped. I even downloaded a RUU but I couldn't install it (probably the wrong version).
Current state is: I can only get into the bootloader which is re-locked (by courtesy of one of my repair attempts). Connecting via USB to fastboot works. Nothing else, for all purposes the phone is clean, empty and oh so very much dead.
How do I proceed from here? In the end I want to have working version of Cyanogenmod back.
Thank you in advance, guys!
Click to expand...
Click to collapse
Unlock it first, you can't do anything with it locked.

Darknites said:
Unlock it first, you can't do anything with it locked.
Click to expand...
Click to collapse
Okay, the device is unlocked again. How do I continue?
Thanks a lot, by the way!

el_Harmakhis said:
Okay, the device is unlocked again. How do I continue?
Thanks a lot, by the way!
Click to expand...
Click to collapse
Flash TWRP recovery and try to mount the sd and connect it to the pc.

Darknites said:
Flash TWRP recovery and try to mount the sd and connect it to the pc.
Click to expand...
Click to collapse
Okay, flashing TWRP worked. I then booted into recovery, clicked on "mount" and then "mount usb device". After some driver installs I can no see the internal storage. Apart from a folder for TWRP and .android_secure it's empty. Is this where I now put the Cyanogenmod file and install it via the recovery?

el_Harmakhis said:
Okay, flashing TWRP worked. I then booted into recovery, clicked on "mount" and then "mount usb device". After some driver installs I can no see the internal storage. Apart from a folder for TWRP and .android_secure it's empty. Is this where I now put the Cyanogenmod file and install it via the recovery?
Click to expand...
Click to collapse
Ya place it where you want and then flash it but you will need to fastboot the boot.img file thats in the rom zip, you can use the All-In-One Toolkit to do that.

Darknites said:
Ya place it where you want and then flash it but you will need to fastboot the boot.img file thats in the rom zip, you can use the All-In-One Toolkit to do that.
Click to expand...
Click to collapse
Copying the ROM and then installing via TWRP worked though I saw that TWRP displayed an error, saying it was unable to mount /cache. When I tried to wipe the Cache & Dalvik Cache I got the same error.
Nevertheless I then went ahead and copyed the boot.img (extracted that one from the Cyanogenmod zip) via fastboot and rebooted the device. Now the phone is stuck in the Cyanogenmod boot loop.

el_Harmakhis said:
Copying the ROM and then installing via TWRP worked though I saw that TWRP displayed an error, saying it was unable to mount /cache. When I tried to wipe the Cache & Dalvik Cache I got the same error.
Nevertheless I then went ahead and copyed the boot.img (extracted that one from the Cyanogenmod zip) via fastboot and rebooted the device. Now the phone is stuck in the Cyanogenmod boot loop.
Click to expand...
Click to collapse
Hmm think you going to have flash the stock recovery then do a factory reset in the bootloader then go back to TWRP and copy over the rom again then factory reset in TWRP and then wipe system and then flash the rom. Do not lock the bootloader.

Darknites said:
Hmm think you going to have flash the stock recovery then do a factory reset in the bootloader then go back to TWRP and copy over the rom again then factory reset in TWRP and then wipe system and then flash the rom. Do not lock the bootloader.
Click to expand...
Click to collapse
Okay, I will try that! Where might I get the stock recovery? I don't want to pick the wrong!

el_Harmakhis said:
Okay, I will try that! Where might I get the stock recovery? I don't want to pick the wrong!
Click to expand...
Click to collapse
Go here for it.

Darknites said:
Go here for it.
Click to expand...
Click to collapse
Ha! It finally worked! Thank you very much! Have a nice weekend!

el_Harmakhis said:
Ha! It finally worked! Thank you very much! Have a nice weekend!
Click to expand...
Click to collapse
Np dude, you too.

Can not reboot to recovery

I'm trying to flash an update to PAC Rom, but I can't get my phone to reboot to recovery (or even shut down).
When I use the power menu, no matter what I choose, the phone does a hot boot. When I hold power and volume down it will go to bootloader then I can access TWRP, but I can't clear dalvik or cache as it says that it can't mount the partitions. The ROM runs fine however and I can access all my data so the cache can't be corrupt.
What can I do here? Thanks to those who help!

Sounds like somethings wrong with your recovery. Get into the bootloader and reflash TWRP using "fastboot flash recovery FileNameOfTWRP.img"

Chromium said:
Sounds like somethings wrong with your recovery. Get into the bootloader and reflash TWRP using "fastboot flash recovery FileNameOfTWRP.img"
Click to expand...
Click to collapse
Would using flashify work here?
It's been a recurring theme on the PAC forum

Synyster06Gates said:
Would using flashify work here?
It's been a recurring theme on the PAC forum
Click to expand...
Click to collapse
Yea that should work too, but if not, fastboot is the way to go.

EDIT : Very very strange. Flashing TWRP again via Flashify got it to work. It seems something in PAC Rom is corrupting the recovery. I think if I get this all worked out then I'm going to have to go back to DK until it's all worked out. I wish there was another ROMs with all the same features as these two but got updates (whereas DK doesn't any more) and is stable enough to DD (lots of FC with PAC).
EDIT 2: Just tried to reboot into recovery again. After booting teh ROM just for a few minutes the recovery was corrupted. I can't access internal memory from recovery any more, even if I get it to boot. It doesn't make any sense as the ROM has full access to it all.
To be clear, TWRP says Internal Storage - 0

Synyster06Gates said:
EDIT : Very very strange. Flashing TWRP again via Flashify got it to work. It seems something in PAC Rom is corrupting the recovery. I think if I get this all worked out then I'm going to have to go back to DK until it's all worked out. I wish there was another ROMs with all the same features as these two but got updates (whereas DK doesn't any more) and is stable enough to DD (lots of FC with PAC).
EDIT 2: Just tried to reboot into recovery again. After booting teh ROM just for a few minutes the recovery was corrupted. I can't access internal memory from recovery any more, even if I get it to boot. It doesn't make any sense as the ROM has full access to it all.
To be clear, TWRP says Internal Storage - 0
Click to expand...
Click to collapse
Here could be the solution. http://forum.xda-developers.com/showthread.php?t=2513701
Flash the cache.img
if it wont work, will have to flash-all

GUGUITOMTG4 said:
Here could be the solution. http://forum.xda-developers.com/showthread.php?t=2513701
Flash the cache.img
if it wont work, will have to flash-all
Click to expand...
Click to collapse
That worked! Thank you!
I actually used to go around the Q&A forum telling people to do just that when they were having issues with wiping on early TWRP versions. Surprised I didn't think to try it. All back on DK now and hunting for a new ROM. :victory:

Synyster06Gates said:
That worked! Thank you!
I actually used to go around the Q&A forum telling people to do just that when they were having issues with wiping on early TWRP versions. Surprised I didn't think to try it. All back on DK now and hunting for a new ROM. :victory:
Click to expand...
Click to collapse
Sounds like you solved it, but I think you could've also done an adb reboot recovery command. Not sure if that works though since I usually only use fastboot.
Sent from my Nexus 5 using Tapatalk

numel007 said:
Sounds like you solved it, but I think you could've also done an adb reboot recovery command. Not sure if that works though since I usually only use fastboot.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
After flashing teh recovery again, I could get INTO it, but the data was not showing up so I couldn't actually do anything from within TWRP. It read I had 0mb internal storage.

How To Fix TWRP Bootloop

After attempting root on my replacement phone, I could NOT boot to system. Each time I rebooted to "System", it would boot straight to TWRP over and over. I tried reflashing stock files. No verity patching.. etc.
The Fix:
Download the latest version of TWRP specific to your device here https://build.nethunter.com/test-builds/twrp/lge/
Flash the file and the device should now be able to boot to system. If that doesn't work try another version.
I spoke to @jcadduono about my problems and he believes there may have been something weird going on in the misc partition. Reflashing TWRP will/should fix the problem.
Thanks @jcadduono for all the support.

I had this happen to me after installing TWRP for the first time. It would keep rebooting to TWRP. This was after making sure I flashed SuperSU as well. Eventually in a moment of "might as well see what will happen" I rebooted then held down the power button and volume down. Got to the option if I wanted to factory reset my phone which I did which booted into TWRP. Rebooted to system from there which got me out of the TWRP Bootloop.

I'm still in the bootloop. It now says "No OS installed." Any help would be appreciated.
Also, I'm getting this:
"Failed to mount '/system' (Unknown error 150)"
Help, please!
---------- Post added at 12:59 PM ---------- Previous post was at 12:05 PM ----------
I tried all *three* versions. Still on a TWRP bootloop.

Mrsana said:
I'm still in the bootloop. It now says "No OS installed." Any help would be appreciated.
Also, I'm getting this:
"Failed to mount '/system' (Unknown error 150)"
Help, please!
---------- Post added at 12:59 PM ---------- Previous post was at 12:05 PM ----------
I tried all *three* versions. Still on a TWRP bootloop.
Click to expand...
Click to collapse
Download the deodex rom flash it, then flash no_verity , then format data.

Mastajeff said:
Download the deodex rom flash it, then flash no_verity , then format data.
Click to expand...
Click to collapse
So, I've done those steps and I'm still stuck in a recovery bootloop. I have twrp, just can't seem to get out of it

frenize said:
So, I've done those steps and I'm still stuck in a recovery bootloop. I have twrp, just can't seem to get out of it
Click to expand...
Click to collapse
Turn off your phone. Go into TWRP *manually*. That is, press the power off and volume down buttons. Once you see the LG logo, quickly release the power button and press it again. It will ask if you want to do a factory reset. Say "Yes" to both.
Once inside TWRP (*manually*), do a factory reset. You will be rebooted and it will go back to TWRP. Once inside TWRP after the reboot, go to reboot and choose "System". You should know be out of the TWRP bootloop!
It worked for me.

frenize said:
So, I've done those steps and I'm still stuck in a recovery bootloop. I have twrp, just can't seem to get out of it
Click to expand...
Click to collapse
Decrypt data.
As a general statement : Almost all TWRP bootloops are due to users not backing up their data, and then formatting data.
Hardware encryption is not supported.
Decrypt your data, flash a ROM, and if that ROM doesn't have SuperSU, flash SuperSU.
Go flash my v5 MOD ROM.
Decrypt your data! 95% of TWRP loop cases are due to data not being decrypted, or some other step the user failed to follow.
Good luck.
---------- Post added at 04:28 PM ---------- Previous post was at 04:28 PM ----------
Mrsana said:
I'm still in the bootloop. It now says "No OS installed." Any help would be appreciated.
Also, I'm getting this:
"Failed to mount '/system' (Unknown error 150)"
Help, please!
---------- Post added at 12:59 PM ---------- Previous post was at 12:05 PM ----------
I tried all *three* versions. Still on a TWRP bootloop.
Click to expand...
Click to collapse
This is because you went to Advanced Wipe, and formatted /system.
Make sure you are on the latest TWRP, make sure you're data is decrypted, and then go flash my v5 MOD ROM.

For those that are still having troubles. My guide works: forum.xda-developers.com/v20/how-to/how-fixed-bricked-lg-v20-t3501310

Mastajeff said:
After attempting root on my replacement phone, I could NOT boot to system. Each time I rebooted to "System", it would boot straight to TWRP over and over. I tried reflashing stock files. No verity patching.. etc.
The Fix:
Download the latest version of TWRP specific to your device here https://build.nethunter.com/test-builds/twrp/lge/
Flash the file and the device should now be able to boot to system. If that doesn't work try another version.
I spoke to @jcadduono about my problems and he believes there may have been something weird going on in the misc partition. Reflashing TWRP will/should fix the problem.
Thanks @jcadduono for all the support.
Click to expand...
Click to collapse
is it possible that the phone bootloops without doing anything like root and custom roms?
asking cz i'm looking to get the LG V20 but don't know about the risk of it bootlooping itself, without rooting or anything like that, like it used
to happen on lg g4 and g3.
Thank you

It's been determined that it does this when it finds an update in the fota and or misc folders. The phone downloads updates even when you tell it not to. It just doesn't install them without your permission.
Easy to get out of with the volume down and power button reset procedure which then deletes the files automatically or you can delete the files in twrp to fix it.

Poda_jj said:
is it possible that the phone bootloops without doing anything like root and custom roms?
asking cz i'm looking to get the LG V20 but don't know about the risk of it bootlooping itself, without rooting or anything like that, like it used
to happen on lg g4 and g3.
Thank you
Click to expand...
Click to collapse
All the bootloops for the V20 so far are all due to modifications and rooting. There are some roms that work for everyone but just refuses to work on my phone and will just bootloop. I doubt that the cause of the software bootloop is fully known. I've followed directions 100% on working romss and it would bootloop but installed a different version of the same rom and it worked. None of the bootloop "fixes" did anything for me. Fortunately, the rom that I installed is still awesome and works great.
LS997 BTW

I fought with this for many hours yesterday. I tried everything I could find and got nowhere. Finally ended out holding Volume Up while inserting the cable to computer to put the phone in download mode and was able to use the kdz file to stock restore.

bond32 said:
I fought with this for many hours yesterday. I tried everything I could find and got nowhere. Finally ended out holding Volume Up while inserting the cable to computer to put the phone in download mode and was able to use the kdz file to stock restore.
Click to expand...
Click to collapse
my phone is in twrp bootloop as well, mind going into a bit of details as in how you did the kdz restore?

dangercl0se said:
my phone is in twrp bootloop as well, mind going into a bit of details as in how you did the kdz restore?
Click to expand...
Click to collapse
There's a few guides here on how to do a full restore. Make sure you download the things you need according to your model V20 and make sure you have ADB working and current drivers installed.
http://forum.xda-developers.com/v20/how-to/restore-v20-to-100-stock-bricked-devices-t3524903/page7
I've used the kdz file before without any problems but it began the process from my home screen. I had no idea how to get it to start if you're in a TWRP loop which is where the "download mode" came in.
With the phone completely off, hold volume up a d plug it in the computer.
That will put it in download mode which is what mine needed.
The other mistake I made, make sure you use a USB 2.0 port, not 3.0. I've always had issues with USB 3.0 drivers not working correctly but 2.0 seems to be good.
My one is fully back to stock on Verizon 13a now and works well, except I think something is taking up space on my internal storage. It shows a max of around 50 gb with used some and 44 gb available. That seems quite low like something isn't right...

twrp boot loops most deffinately happen due to the update package sitting in your misc folder
use twrp to delete the misc directory as well as the fota directory and reboot.
This hasn't happened to me once since i moved to the latest version for my variant, but happens a ton when using the original build that kept dl the update regardless of me telling it to.
This is a common issue with the LG series and boot-loops. They all do this if there is a expected upate in the misc directory. And has been covered many times over the variants and that deleting misc is the only option. Some of us dont have a kdz, or if youve changed your build.prop the kdz wont restore anything since it will see it as a incompatible device.
before rebooting into twrp on a older build make sure you delete the update package if not this will keep happening. once deleted make sure the updater gets frozen so it wont re-download later.

Team DevDigitel said:
twrp boot loops most deffinately happen due to the update package sitting in your misc folder
use twrp to delete the misc directory as well as the fota directory and reboot.
This hasn't happened to me once since i moved to the latest version for my variant, but happens a ton when using the original build that kept dl the update regardless of me telling it to.
This is a common issue with the LG series and boot-loops. They all do this if there is a expected upate in the misc directory. And has been covered many times over the variants and that deleting misc is the only option. Some of us dont have a kdz, or if youve changed your build.prop the kdz wont restore anything since it will see it as a incompatible device.
before rebooting into twrp on a older build make sure you delete the update package if not this will keep happening. once deleted make sure the updater gets frozen so it wont re-download later.
Click to expand...
Click to collapse
Thanks. I suppose deleting those folders isn't possible without root access?

bond32 said:
Thanks. I suppose deleting those folders isn't possible without root access?
Click to expand...
Click to collapse
yeah MISC and FOTA are protected as read only for the user without root.

Mrsana said:
Turn off your phone. Go into TWRP *manually*. That is, press the power off and volume down buttons. Once you see the LG logo, quickly release the power button and press it again. It will ask if you want to do a factory reset. Say "Yes" to both.
Once inside TWRP (*manually*), do a factory reset. You will be rebooted and it will go back to TWRP. Once inside TWRP after the reboot, go to reboot and choose "System". You should know be out of the TWRP bootloop!
It worked for me.
Click to expand...
Click to collapse
Thank you, This Worked for me.

bond32 said:
There's a few guides here on how to do a full restore. Make sure you download the things you need according to your model V20 and make sure you have ADB working and current drivers installed.
http://forum.xda-developers.com/v20/how-to/restore-v20-to-100-stock-bricked-devices-t3524903/page7
I've used the kdz file before without any problems but it began the process from my home screen. I had no idea how to get it to start if you're in a TWRP loop which is where the "download mode" came in.
With the phone completely off, hold volume up a d plug it in the computer.
That will put it in download mode which is what mine needed.
The other mistake I made, make sure you use a USB 2.0 port, not 3.0. I've always had issues with USB 3.0 drivers not working correctly but 2.0 seems to be good.
My one is fully back to stock on Verizon 13a now and works well, except I think something is taking up space on my internal storage. It shows a max of around 50 gb with used some and 44 gb available. That seems quite low like something isn't right...
Click to expand...
Click to collapse
did that, phone works, no more root.... i rooted the phone again, flashed SU and encryption zip. STILL GET INTO TWRP LOOP.

dangercl0se said:
did that, phone works, no more root.... i rooted the phone again, flashed SU and encryption zip. STILL GET INTO TWRP LOOP.
Click to expand...
Click to collapse
Did you try the above where you delete the misc and fota folders?

Boots to OS but immediately shuts down and reboots to recovery

I was on 5.1.8 and updated to 5.1.9 but for some reason the phone boots, goes to the OS but immediately shows the shutting down dialog box and reboots the phone to recovery.
I tried reinstalling 5.1.9 with and without root but have the same result. I have tried with and without permanent twrp. The only thing I haven't tried is a factory reset as I am abroad and cannot afford to lose all my info (especially whatsapp as I won't be able to set it back up until 2 weeks when I return home).
Has anyone encountered anything like this or know how to fix it?

toyanucci said:
I was on 5.1.8 and updated to 5.1.9 but for some reason the phone boots, goes to the OS but immediately shows the shutting down dialog box and reboots the phone to recovery.
I tried reinstalling 5.1.9 with and without root but have the same result. I have tried with and without permanent twrp. The only thing I haven't tried is a factory reset as I am abroad and cannot afford to lose all my info (especially whatsapp as I won't be able to set it back up until 2 weeks when I return home).
Has anyone encountered anything like this or know how to fix it?
Click to expand...
Click to collapse
Share this with OnePlus team on Twitter too until someone help you here too.
If MTP supported by your TWRP then copy the data? If TWRP is still there.

mjp93 said:
Share this with OnePlus team on Twitter too until someone help you here too.
If MTP supported by your TWRP then copy the data? If TWRP is still there.
Click to expand...
Click to collapse
MTP doesn't work but adb works. I have reinstalled 5.1.9 after doing a full wipe and still the phone reboots to recovery after trying to boot normally.
Can anyone help me please :crying::crying::crying::crying:

toyanucci said:
I was on 5.1.8 and updated to 5.1.9 but for some reason the phone boots, goes to the OS but immediately shows the shutting down dialog box and reboots the phone to recovery.
I tried reinstalling 5.1.9 with and without root but have the same result. I have tried with and without permanent twrp. The only thing I haven't tried is a factory reset as I am abroad and cannot afford to lose all my info (especially whatsapp as I won't be able to set it back up until 2 weeks when I return home).
Has anyone encountered anything like this or know how to fix it?
Click to expand...
Click to collapse
Just dirty flash 5.1.8 system update in TWRP, reflash TWRP, reboot recovery, flash magisk. You shouldn't have to wipe data if there were no problems in previous OS and forcing a shutdown shouldn't be due to data anyway. You could also try to dirty flash 5.1.9 again with those steps. Has to be the full ROM.

mikex8593 said:
Just dirty flash 5.1.8 system update in TWRP, reflash TWRP, reboot recovery, flash magisk. You shouldn't have to wipe data if there were no problems in previous OS and forcing a shutdown shouldn't be due to data anyway. You could also try to dirty flash 5.1.9 again with those steps. Has to be the full ROM.
Click to expand...
Click to collapse
I'm travelling and the hotel wifi is super slow. I have the full 5.1.9 and I've tried dirty flashing and clean flashing (I did a nandroid backup first). With a dirty flash the phone boots to the lockscreen but immediately says shutting down and reboots, after the reboot it goes to recovery (stock or twrp whichever is installed). After a clean flash it seems to try to boot then just shuts off and reboots to whichever recovery is installed.
I've set 5.1.8 to download which will take HOURS so I'll report back with any update. I pray this fixes it...

toyanucci said:
MTP doesn't work but adb works. I have reinstalled 5.1.9 after doing a full wipe and still the phone reboots to recovery after trying to boot normally.
Can anyone help me please :crying::crying::crying::crying:
Click to expand...
Click to collapse
In thw worst case, since ADB works, you can backup your entire internal storage to your computer and factory reset. Use adb-sync for this.

Pat123 said:
In thw worst case, since ADB works, you can backup your entire internal storage to your computer and factory reset. Use adb-sync for this.
Click to expand...
Click to collapse
I did a factory reset (didn't wipe internal storage) after doing the nandroid backup and it had the same issue where it tried to boot then screen went black and it rebooted to recovery

mikex8593 said:
Just dirty flash 5.1.8 system update in TWRP, reflash TWRP, reboot recovery, flash magisk. You shouldn't have to wipe data if there were no problems in previous OS and forcing a shutdown shouldn't be due to data anyway. You could also try to dirty flash 5.1.9 again with those steps. Has to be the full ROM.
Click to expand...
Click to collapse
5.1.8 should be flashed again over current 5.1.8?

Why not just tell twrp to switch back to other slot with working oos. I am missing something that this was not tried yet?

MrSteelX said:
Why not just tell twrp to switch back to other slot with working oos. I am missing something that this was not tried yet?
Click to expand...
Click to collapse
I tried changing slots in twrp. Slot A boots to lockscreen then powers off and boots to recovery. Slot B doesn't boot at all and just shows a light blue notification LED.

toyanucci said:
I did a factory reset (didn't wipe internal storage) after doing the nandroid backup and it had the same issue where it tried to boot then screen went black and it rebooted to recovery
Click to expand...
Click to collapse
I meant take backup through ADB, format everything including data, internal storage, then fastboot flash full ROM zip.

I am having the same exact issue.
Can't restore a nandroid backup. All I get is light blue notification LED. I tried 5.1.8 and 5.1.9. With TWRP right after and without it. Without even magisk. It just bootloops forever. If I install 5.1.9/5.1.8 full zips, twrp, reboot recovery, magisk. It just reboots into twrp. I can't even install any of the full ota zips. It wont get past the android boot animation when I just want to flash the ota zip only. Can't get out of twrp. Luckily I was able to backup everything, but don't know how to proceed further allowing me to regain usage of my phone.

To me, this is sounding like something did not flash right with vendor partition.
if a full wipe of System, data, internal storage, the whole 9 yards doesn't work. The only option I see that should work is the mega unbrick thread. https://forum.xda-developers.com/oneplus-6/how-to/guide-mega-unbrick-guide-hard-bricked-t3796051

MrSteelX said:
To me, this is sounding like something did not flash right with vendor partition.
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Any suggestions how to fix this. I am hoping I dont have to use the MSM tool and start all the way from scratch.

garz said:
Any suggestions how to fix this. I am hoping I dont have to use the MSM tool and start all the way from scratch.
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Did you make sure the download was not corrupt before flashing? OnePlus6Oxygen_22_OTA_013_all_1807130145_92ea1c670c0fae.zip MD5 61EAE0DA48C6B3914F48F3E6EA99A74B

Yes, everything matched up. I guess I need to start from scratch.
---------- Post added at 10:25 AM ---------- Previous post was at 10:08 AM ----------
This guy's tool worked like a champ for me. Didn't have to delete everything in storage.
https://forum.xda-developers.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665/

garz said:
Yes, everything matched up. I guess I need to start from scratch.
---------- Post added at 10:25 AM ---------- Previous post was at 10:08 AM ----------
This guy's tool worked like a champ for me. Didn't have to delete everything in storage.
https://forum.xda-developers.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665/
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Funny, I was about post that link but i see you found it first. It is also good that it fixed it for you.

As far as TWRP backups, you only need to backup data. You can just install the full ROM zip file and restore data to get everything back if you have issues with nandroid restore. Just don't forget to flash TWRP before rebooting or you will need to fastboot it again.

Maybe an issue with battery calibration. Try checking the battery when the phone just boots. If it says low battery and because of that its shutting down then its just a software error and just try to turn in the phone with charger connected to check if tgats the problem. If that dosent work try the oneplus 6 mega unbrick guide and return to stock oos 5.1.5 using snapdragon msm recovery tool. For detailed info see tge OP6 unbrick guide on xda. Tell me if it works

toyanucci said:
I tried changing slots in twrp. Slot A boots to lockscreen then powers off and boots to recovery. Slot B doesn't boot at all and just shows a light blue notification LED.
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One question, when you manually change to slot B, you're in a black screen with blue notification LED right? If that doesn't even go fastboot, how do you get out of that slot into the other one again to the boot-recovery loop?