Develop Bugs

Unable to mount partitions after flashing TWRP on Nexus 7 (2013, WiFi, flo)

I just bought this device a week and I haven't even rooted I wanted to install Cyanogenmode and follow through the instructions and flashed TWRP through fastboot commands from Windows7 using Minimal ADB and Fastboot [8-28-15].
I got the TWRP recovery but I am not sure what have I done wrong, when I am in the TWRP recovery, it does not show any partitions so I am unable to install any ROM on it.
I have also tried to use this thread: http://forum.xda-developers.com/nexus-7-2013/nexus-7-2013-qa/mount-recovery-t3064562 when I flash the given recovery from fastboot commands from this thread, the recovery get stuck with bootloop. So then I restored it back to the original TWRP 2.8.7.0.
So at this point now I can only access bootloader and the recovery which does not show partitions.
At this point Is it possible for me to go back to the stock ROM somehow? Please advice. Otherwise I might be able to return it because I have only bought it few days ago.
SOLVED: To get TWRP to work, I flashed the original stock ROM from here https://developers.google.com/androi...s/images?hl=en using adb. I then flashed this TWRP multirom https://s.basketbuild.com/filedl/dev...o_20150630.img
This allowed TWRP to work.
Thanks to Batfink33 and lynnux

You can follow this guide to flash the newest factory image: http://androidforums.com/threads/guide-how-to-flash-a-nexus-factory-image-manually.706533/. You should just download the latest factory image from: https://developers.google.com/android/nexus/images?hl=en the one in the guide is outdated.

Join the club, I did the same thing you did with the same results(even flashing the multirom twrp after flashing the regular one, and getting the recovery bootloop). I happened to find the same instructions theminikiller posted above after pulling my hair out trying to figure out what went wrong.
This post http://forum.xda-developers.com/showpost.php?p=62275723&postcount=558 explains what's going on. If you do the above and then flash the multirom twrp it should work fine, it did for me. I also reformatted system in adb after erasing everything, not sure if that was necessary or not.

lynnux said:
Join the club, I did the same thing you did with the same results(even flashing the multirom twrp after flashing the regular one, and getting the recovery bootloop). I happened to find the same instructions theminikiller posted above after pulling my hair out trying to figure out what went wrong.
This post http://forum.xda-developers.com/showpost.php?p=62275723&postcount=558 explains what's going on. If you do the above and then flash the multirom twrp it should work fine, it did for me. I also reformatted system in adb after erasing everything, not sure if that was necessary or not.
Click to expand...
Click to collapse
Did the multirom TWRP work for you? I get a bootloop in TWRP when I flash that multirom TWRP posted.

Batfink33 said:
Did the multirom TWRP work for you? I get a bootloop in TWRP when I flash that multirom TWRP posted.
Click to expand...
Click to collapse
It worked for me, but only after erasing everything via adb and reflashing all the stock images. I got the bootloop when I flashed the regular twrp first, then the multirom twrp. Also, I'm using the most recent multirom twrp from June (I believe).

lynnux said:
It worked for me, but only after erasing everything via adb and reflashing all the stock images. I got the bootloop when I flashed the regular twrp first, then the multirom twrp. Also, I'm using the most recent multirom twrp from June (I believe).
Click to expand...
Click to collapse
Yay, it works for me now. I had to install the stock ROM using adb then flash the multirom TWRP. Thanks!

Batfink33 said:
Yay, it works for me now. I had to install the stock ROM using adb then flash the multirom TWRP. Thanks!
Click to expand...
Click to collapse
Thanks for your replies here. Could you please give me the link to the multiroom Recovery that had worked for you? Also did you installed Cynageon mode after getting the mutliroom TWRP working? Please advice

a4abbas said:
Thanks for your replies here. Could you please give me the link to the multiroom Recovery that had worked for you? Also did you installed Cynageon mode after getting the mutliroom TWRP working? Please advice
Click to expand...
Click to collapse
To get TWRP to work, I flashed the original stock ROM from here https://developers.google.com/android/nexus/images?hl=en using adb. I then flashed this TWRP multirom https://s.basketbuild.com/filedl/de...//multirom/flo/TWRP_multirom_flo_20150630.img
This allowed TWRP to work.

Batfink33 said:
To get TWRP to work, I flashed the original stock ROM from here https://developers.google.com/android/nexus/images?hl=en using adb. I then flashed this TWRP multirom https://s.basketbuild.com/filedl/de...//multirom/flo/TWRP_multirom_flo_20150630.img
This allowed TWRP to work.
Click to expand...
Click to collapse
Is it required to enable Developer options at some point of flashing it successfully? I am in China and here the google is blocked i bought this tablet and I can not get through the first screen that ask me to connect the wifi (no option to skip it unless i connect to wifi) then after loading it gets error message that it is failed to connect to internet. So just understand that I can not goto the device options right now. So is it possible to flash cynagonmode rom without enabling developer option. Please advice

a4abbas said:
Is it required to enable Developer options at some point of flashing it successfully? I am in China and here the google is blocked i bought this tablet and I can not get through the first screen that ask me to connect the wifi (no option to skip it unless i connect to wifi) then after loading it gets error message that it is failed to connect to internet. So just understand that I can not goto the device options right now. So is it possible to flash cynagonmode rom without enabling developer option. Please advice
Click to expand...
Click to collapse
No, it's not required. Just turn off your device. Then to boot into the bootloader hold volume down + power button until it's done booting. From there you can follow other guides to unlock the bootloader and installing custom recovery and Rom's.

theminikiller said:
No, it's not required. Just turn off your device. Then to boot into the bootloader hold volume down + power button until it's done booting. From there you can follow other guides to unlock the bootloader and installing custom recovery and Rom's.
Click to expand...
Click to collapse
I have tried to do it. But the device is not being recognized with the ADB tools on my PC. Any ideas? Could it be because of the USB debugging option?

a4abbas said:
I have tried to do it. But the device is not being recognized with the ADB tools on my PC. Any ideas? Could it be because of the USB debugging option?
Click to expand...
Click to collapse
When you are in the bootloader it doesn't matter if you have USB debugging enabled or not. It could be a problem with your driver's.

theminikiller said:
When you are in the bootloader it doesn't matter if you have USB debugging enabled or not. It could be a problem with your driver's.
Click to expand...
Click to collapse
You must be right, it make sense.

Recovery not working.

EDIT: Resolved by following Naman Bhalla's Unbrick Guide.
I'm on latest Freedom OS community build right now. I have this problem where my OP3 won't boot into recovery at all. Trying to do it just kills it and only a very long power button press is able to revive it.
I have tried flashing the recovery via fastboot but that also doesn't work. Is there a way out of it? I can't flash zips. Are there factory images I can flash via fastboot that can replace everything? I don't care about the data. Any help would be appreciated.

flash modified recovery via fastboot
Sent from my ONEPLUS A3003 using Tapatalk

I have tried Garak's TWRP and the other TWRP. It doesn't change anything. Are there factory images like Google provides which can be flashed using fastboot?

i have the same problem, flashed the previouse version of Oxygen OS. But now i can't get in to recovery.. when i flash it trough fastboot everything goes ok, but when i want to go into recovery the screen is blank and the device does nothing.

Maybe read the OP of FreedomOS rom.

NevaX1 said:
Maybe read the OP of FreedomOS rom.
Click to expand...
Click to collapse
I have read the OP of Freedom OS. I understand that obviously I overlooked something because of which I ended up where I am but I am looking for solutions here. I did not dirty flash the community build if that's what you mean.

n33raj18 said:
I have read the OP of Freedom OS. I understand that obviously I overlooked something because of which I ended up where I am but I am looking for solutions here. I did not dirty flash the community build if that's what you mean.
Click to expand...
Click to collapse
You need the modified twrp version, the only way to recognize it, it has a mouse cursor in the middle of your screen.

n33raj18 said:
I'm on latest Freedom OS community build right now. I have this problem where my OP3 won't boot into recovery at all. Trying to do it just kills it and only a very long power button press is able to revive it.
I have tried flashing the recovery via fastboot but that also doesn't work. Is there a way out of it? I can't flash zips. Are there factory images I can flash via fastboot that can replace everything? I don't care about the data. Any help would be appreciated.
Click to expand...
Click to collapse
I tried that I got the same error and wipe everything even internal then got a thread in unbrick oneplus 3 and it worked try method 2 link (http://forum.xda-developers.com/oneplus-3/how-to/guide-mega-unbrick-guide-hard-bricked-t3405700)

NevaX1 said:
You need the modified twrp version, the only way to recognize it, it has a mouse cursor in the middle of your screen.
Click to expand...
Click to collapse
I had the same problem with 'no recovery' and this helped!
Thanks!
http://forum.xda-developers.com/showpost.php?p=68691560&postcount=56

vvverma said:
I tried that I got the same error and wipe everything even internal then got a thread in unbrick oneplus 3 and it worked try method 2 link (http://forum.xda-developers.com/oneplus-3/how-to/guide-mega-unbrick-guide-hard-bricked-t3405700)
Click to expand...
Click to collapse
Yea, I used exactly the same thing to get back my device working correctly again. I missed the crucial information that modified TWRP was required.

Need help solved

I was on cm 13 something and flashed cm 14.1 everything was working ok but i didnt flashed gapps zip.
so i tried to go into recovery and there was no recovery anymore...
then i reset cm 14.1 that i can start from a fresh rom and since then i cant start my phone
i dont have a recovery i can get in but i can get into fastboot mode
hope someone is able to help me and could tell me what to do / try to install a working system again

Inlacrimas said:
I was on cm 13 something and flashed cm 14.1 everything was working ok but i didnt flashed gapps zip.
so i tried to go into recovery and there was no recovery anymore...
then i reset cm 14.1 that i can start from a fresh rom and since then i cant start my phone
i dont have a recovery i can get in but i can get into fastboot mode
hope someone is able to help me and could tell me what to do / try to install a working system again
Click to expand...
Click to collapse
Use this toolkit on a pc to fix your recovery, forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799
Hope it helps.

JoshDaWhite said:
Use this toolkit on a pc to fix your recovery, forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799
Hope it helps.
Click to expand...
Click to collapse
i am not that familir with all these kinds of stuff
what would be the steps i had to do ?

Inlacrimas said:
i am not that familir with all these kinds of stuff
what would be the steps i had to do ?
Click to expand...
Click to collapse
Download the toolkit and unzip it. Launch the bat file and the find the option to flash twrp recovery.

JoshDaWhite said:
Download the toolkit and unzip it. Launch the bat file and the find the option to flash twrp recovery.
Click to expand...
Click to collapse
it doesnt find my device
when i press 7 it tells me error device not found

Inlacrimas said:
it doesnt find my device
when i press 7 it tells me error device not found
Click to expand...
Click to collapse
Enter fastboot mode. Connect device to pc. You need to download the attached zip. Unzip it, open the folder until you see a bunch of files.Click the back button, select the folder, press Shift and click the right side of the mouse, and select open command window here.use the command fastboot devices and report back.

This is the zip I told you about.

JoshDaWhite said:
This is the zip I told you about.
Click to expand...
Click to collapse
nothing happend to the phone stays in fastboot

Inlacrimas said:
nothing happend to the phone stays in fastboot
Click to expand...
Click to collapse
Yes but the command returned any results?

JoshDaWhite said:
Yes but the command returned any results?
Click to expand...
Click to collapse
yes 9771bc7e fastboot like in the linked picture

Inlacrimas said:
yes 9771bc7e fastboot like in the linked picture
Click to expand...
Click to collapse
Unfortunately the picture is too small to read from it. It is great! It means your device can receive fastboot commands! I can guide you how to install stock Oxygen os 3.2.7. That also means you lose your data from internal storage. Do you want Oxygen os 3.2.7?

JoshDaWhite said:
Unfortunately the picture is too small to read from it. It is great! It means your device can receive fastboot commands! I can guide you how to install stock Oxygen os 3.2.7. That also means you lose your data from internal storage. Do you want Oxygen os 3.2.7?
Click to expand...
Click to collapse
i want any system that works currently since i cant get into recovery ^^
if i can go back into recovery i should be able to manage stuff on my own or i just flash rom xyz afterwards then thats no big deal
you can click on the magnifying glass to make it bigger :good:

JoshDaWhite said:
Unfortunately the picture is too small to read from it. It is great! It means your device can receive fastboot commands! I can guide you how to install stock Oxygen os 3.2.7. That also means you lose your data from internal storage. Do you want Oxygen os 3.2.7?
Click to expand...
Click to collapse
i tried arround and managed to flash twpr with the programm but nothing has changed cant boot into recovery

Inlacrimas said:
i tried arround and managed to flash twpr with the programm but nothing has changed cant boot into recovery
Click to expand...
Click to collapse
Flash the stock recovery then sideload Oxygen os.

JoshDaWhite said:
Flash the stock recovery then sideload Oxygen os.
Click to expand...
Click to collapse
tried flashing stock recovery phone powers of or rebbots or something
how can i sideload theoxygen os ?
Think i just helped myself with
https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
works again thanks for your help

Inlacrimas said:
tried flashing stock recovery phone powers of or rebbots or something
how can i sideload theoxygen os ?
Think i just helped myself with
https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
works again thanks for your help
Click to expand...
Click to collapse
Glad you fixed it.

JoshDaWhite said:
Glad you fixed it.
Click to expand...
Click to collapse
Really appreciate all the time you spent helping here :good:

Inlacrimas said:
I was on cm 13 something and flashed cm 14.1 everything was working ok but i didnt flashed gapps zip.
so i tried to go into recovery and there was no recovery anymore...
then i reset cm 14.1 that i can start from a fresh rom and since then i cant start my phone
i dont have a recovery i can get in but i can get into fastboot mode
hope someone is able to help me and could tell me what to do / try to install a working system again
Click to expand...
Click to collapse
Fyi, if u decide to go back to 14.1, you will need to flash modified twrp http://forum.xda-developers.com/devdb/project/dl/?id=21065&task=get
Then recovery will stay intact

trying to flash twrp; it just hangs!

Hi all,
*I've unlocked bootloader
* Have tried fastboot boot TWRP.img, as well as tried flashing TWRP RC1 via the Skipsoft toolkit.
Every way I've tried the phone just sits at the TWRP boot screen and doesn't allow me to go any further..
Any help here would be truly appreciated!
Cheers,

I've been having the same issue tonight. Re-flash the stock image, go through the whole setup process and make sure you add a lockscreen pin, then flash TWRP. That is what worked for me. I still can't flash a Rom though for some reason. It's driving me insane.

dutchy716 said:
I've been having the same issue tonight. Re-flash the stock image, go through the whole setup process and make sure you add a lockscreen pin, then flash TWRP. That is what worked for me. I still can't flash a Rom though for some reason. It's driving me insane.
Click to expand...
Click to collapse
You're braver than me. I haven't had my Pixel XL long but this is the first phone I've ever owned where I am afraid to try and install a custom recovery and ROM. With the dual partitions and what I hear about TWRP still being buggy it just seems like Google didn't want people to run anything but pure Android on the Pixels.

dutchy716 said:
I've been having the same issue tonight. Re-flash the stock image, go through the whole setup process and make sure you add a lockscreen pin, then flash TWRP. That is what worked for me. I still can't flash a Rom though for some reason. It's driving me insane.
Click to expand...
Click to collapse
Same issue here, but no solution. Adding a lockscreen pin didn't change anything for me. I just get a teamwin image but it just sits there & doesn't actually open TWRP. My bootlocker is unlocked but thats as far as I can get 7.1.2 with May security. I have tried reloading everything and followed commonly recommended steps.
Any suggestions greatly appreciated. I would love to get this thing rooted and get some ROM flexibility - even to just get rid of the Nav Bar ....

mikefnz said:
Same issue here, but no solution. Adding a lockscreen pin didn't change anything for me. I just get a teamwin image but it just sits there & doesn't actually open TWRP. My bootlocker is unlocked but thats as far as I can get 7.1.2 with May security. I have tried reloading everything and followed commonly recommended steps.
Any suggestions greatly appreciated. I would love to get this thing rooted and get some ROM flexibility - even to just get rid of the Nav Bar ....
Click to expand...
Click to collapse
I have never had a problem. Make sure your using the rc1 fast boot TWRP. Should be fastboot boot twrp.img. I change file name to this or copy and paste. Then you install rc1 or rc2 zip.
I know you will have problems if you try to install the wrong file.

mac796 said:
I have never had a problem. Make sure your using the rc1 fast boot TWRP. Should be fastboot boot twrp.img. I change file name to this or copy and paste. Then you install rc1 or rc2 zip.
I know you will have problems if you try to install the wrong file.
Click to expand...
Click to collapse
I am doing exactly as you mentioned.. flash rc1.img, however the phone does not go beyond the boot screen, it just sits there.... Can I ask what steps you are taking prior to flashing twrp? Thanks!

mazubo said:
I am doing exactly as you mentioned.. flash rc1.img, however the phone does not go beyond the boot screen, it just sits there.... Can I ask what steps you are taking prior to flashing twrp? Thanks!
Click to expand...
Click to collapse
Hmm are you on may bootloader because i think modifying the boot partition causes bootloop without the boot signature?

XtraArrow said:
Hmm are you on may bootloader because i think modifying the boot partition causes bootloop without the boot signature?
Click to expand...
Click to collapse
Yes I am.. should I downgrade to 7.1.1? Tjere was no mention of that issue in the skipsoft toolkit thread... Weird!

mazubo said:
Yes I am.. should I downgrade to 7.1.1? Tjere was no mention of that issue in the skipsoft toolkit thread... Weird!
Click to expand...
Click to collapse
Sure, i guess.. or you could just manually flash the April bootloader. a lot easier.

XtraArrow said:
Sure, i guess.. or you could just manually flash the April bootloader. a lot easier.
Click to expand...
Click to collapse
Ok, would flashing just the bootloader wipe the phone? Also how would I find just the bootloader? Thanks for the suggestion, I haven't flashed just a bootloader before..

mazubo said:
I am doing exactly as you mentioned.. flash rc1.img, however the phone does not go beyond the boot screen, it just sits there.... Can I ask what steps you are taking prior to flashing twrp? Thanks!
Click to expand...
Click to collapse
That strange. I just flash a factory image from Google
Set up a security pattern
Enable adb debugging
Fastboot boot twrp 3.0.2-0 rc1 IMG
Make sure it asks for your security pattern if it doesn't reboot to bootloader and fastboot twrp again, and keep repeating until it does
Install twrp 3.1.0.0 rc2 or rc1 zip
If your using may bootloader's fish VBS 6 zip
And it should stick, if you flash. Anything else that messes with boot flash that VBS zip at the end again

mazubo said:
Ok, would flashing just the bootloader wipe the phone? Also how would I find just the bootloader? Thanks for the suggestion, I haven't flashed just a bootloader before..
Click to expand...
Click to collapse
If you download the offiial april firmware, you can manually extract it from the .zip then you would do this command in fastboot :--------- fastboot flash bootloader PUTFILEHERE.img
EDIT: Are you able to get into TWRP by any chance??

mac796 said:
That strange. I just flash a factory image from Google
Set up a security pattern
Enable adb debugging
Fastboot boot twrp 3.0.2-0 rc1 IMG
Make sure it asks for your security pattern if it doesn't reboot to bootloader and fastboot twrp again, and keep repeating until it does
Install twrp 3.1.0.0 rc2 or rc1
If your using may bootloader's fish VBS 6 zip
And it should stick, if you flash. Anything else that messes with boot flash that VBS zip at the end again
Click to expand...
Click to collapse
Hmm, maybe this is where I've gone wrong.. I thought the need to create a security pin/pattern was only if coming from a previously rooted state, or from a custom ROM. I will try this as well and report back.. thanks!

XtraArrow said:
If you download the offiial april firmware, you can manually extract it from the .zip then you would do this command in fastboot :--------- fastboot flash bootloader PUTFILEHERE.img
EDIT: Are you able to get into TWRP by any chance??
Click to expand...
Click to collapse
Unable to get into twrp as previously mentioned. I flash the IMG file, then it just hangs on the TWRP boot screen..

mazubo said:
Unable to get into twrp as previously mentioned. I flash the IMG file, then it just hangs on the TWRP boot screen..
Click to expand...
Click to collapse
Alright, try doing what I mentioned. Download April firmware, extract the bootloader.img from it and flash using command above.

XtraArrow said:
Alright, try doing what I mentioned. Download April firmware, extract the bootloader.img from it and flash using command above.
Click to expand...
Click to collapse
This seems likely to work. Thanks for the suggestions, and I'll report back! Cheers!

mazubo said:
This seems likely to work. Thanks for the suggestions, and I'll report back! Cheers!
Click to expand...
Click to collapse
I'm no expert but it's seems like a decent suggestion. Let us know how it goes.

@mazubo
You keep stating that you just flash the image. Are you flashing it from the bootloader then trying to boot to recovery?
You have to boot TWRP from your PC first. Then from TWRP you can then "flash" TWRP.
Just wanted to make sure that was a step you were taking!

Just wait. It will take little longer
Sent from my Pixel XL using Tapatalk

freddy0872 said:
@mazubo
You keep stating that you just flash the image. Are you flashing it from the bootloader then trying to boot to recovery?
You have to boot TWRP from your PC first. Then from TWRP you can then "flash" TWRP.
Just wanted to make sure that was a step you were taking!
Click to expand...
Click to collapse
Yes, I have tried fastboot to flash the TWRP img, as well as skipsofts toolkit. I guess I've been using the term "flash" for fastboot, as I haven't been able to use twrp yet.. I understand that you need to flash the TWRP img via pc and then flash the TWRP zip, then SuperSU or magisk, whatever your poison may be !

[Moto X4] Boot Loop after Update to lineage-16.0-20200325, adb unauthorized

Hi, I have a bit of a problem:
I have a Moto X4 that's happily been running LineageOS for a while now. Today, I tried updating to the latest/last 16.0 nightly using the LOS updater. Since then, the device is stuck on the LOS boot animation and won't boot further.
I can boot into Recovery, but when I try to connect using adb I get "error: device unauthorized.". After googling this error message I find tutorials telling be to deactivate USB debugging or answer on-screen prompts, neither of which is possible since I can't boot the device to get into those setting or see any prompts.
Any ideas?
-M

xoth said:
Hi, I have a bit of a problem:
I have a Moto X4 that's happily been running LineageOS for a while now. Today, I tried updating to the latest/last 16.0 nightly using the LOS updater. Since then, the device is stuck on the LOS boot animation and won't boot further.
I can boot into Recovery, but when I try to connect using adb I get "error: device unauthorized.". After googling this error message I find tutorials telling be to deactivate USB debugging or answer on-screen prompts, neither of which is possible since I can't boot the device to get into those setting or see any prompts.
Any ideas?
-M
Click to expand...
Click to collapse
Magisk installed?
Can you boot into download mode?

kurtn said:
Magisk installed?
Click to expand...
Click to collapse
No, what's that?
Can you boot into download mode?
Click to expand...
Click to collapse
Well, if I boot up the device holding power and volume down it goes into the fastboot mode where I can then choose "Start", "Boot Recovery", etc. Is that the mode you mean?

xoth said:
No, what's that?
Well, if I boot up the device holding power and volume down it goes into the fastboot mode where I can then choose "Start", "Boot Recovery", etc. Is that the mode you mean?
Click to expand...
Click to collapse
Yes, sorry. From there you can install stock ROM or twrp.

kurtn said:
Yes, sorry. From there you can install stock ROM or twrp.
Click to expand...
Click to collapse
Don't I need a working (ie. not stuck on "unauthorized") adb for this? Or am I missing something?
(Sry for the many questions.)

xoth said:
Don't I need a working (ie. not stuck on "unauthorized") adb for this? Or am I missing something?
(Sry for the many questions.)
Click to expand...
Click to collapse
In fastboot mode you don't need adb. You need fastboot.

kurtn said:
In fastboot mode you don't need adb. You need fastboot.
Click to expand...
Click to collapse
Ooooooh, ok! Yeah, that makes sense. (In my head fastboot was always something using adb, not something completely different.)
Ok, so I should be able to fastboot to something like twrp, hopefully make a backup there, and then try and flash something else on it? I'll see if I manage that, thanks! :fingers-crossed:

kurtn said:
In fastboot mode you don't need adb. You need fastboot.
Click to expand...
Click to collapse
Ok, Update and new problem:
I successfully fastbooted into twrp (Once I tried another cable because the first one wouldn't... *grumble*) but when I tried to mount the data partition to make a backup before flashing, it prompted me for the pattern but despite given the correct pattern it didn't decrypt.
Since fastboot works I could just flash stock but I'd hoped to safe some stuff first.
Any ideas what might be the issue here?

xoth said:
Ok, Update and new problem:
I successfully fastbooted into twrp (Once I tried another cable because the first one wouldn't... *grumble*) but when I tried to mount the data partition to make a backup before flashing, it prompted me for the pattern but despite given the correct pattern it didn't decrypt.
Since fastboot works I could just flash stock but I'd hoped to safe some stuff first.
Any ideas what might be the issue here?
Click to expand...
Click to collapse
So you e crypted your phone. Good thing: no-one can access your data. Bad thing- you can't either

kurtn said:
So you e crypted your phone. Good thing: no-one can access your data. Bad thing- you can't either
Click to expand...
Click to collapse
Very funny. Dying of laughter over here...
But seriously, this is LOS regular file encryption, I know the correct pattern, so I'd expect something mature like TWRP to be able to mount that. But all I've found so far are open bug tickets of this happening over a range of devices.

Quick Update: I managed to get my device running again using the following steps:
1. Fastboot into twrp.
2. Go to Advanced -> ADB Sideload and activate it there.
3. Sideload an earlier LOS 16.0 nightly. (In my case, I used 16.0-20200322-nightly-payton-signed.zip.)
4. Reboot.
5. Do all the backups.