Database Users

Lack of recovery

Hey guys, I'm a longtime XDA browser but hardly ever post. I have the MXPE rooted with the newest TWRP build and has been running great since I got it. last night flashed the Deodexed 6.0 build from AICPs 5.1.1. I had some issues with the SD card being mounted as internal storage and erasing something so I tried to flash back to stock as my nandroids weren't seen as usable.
Long story short when I flashed back to stock, the recovery would never take. I've flashed the stock recovery and twrp to no avail. For some reason it wont actually stick. Everything else is back to stock but that. When I used the win toolkit and tried to flash twrp again it said something about the folder locations so I'm wondering if I messed something in the partitions.
Question is, have you guys ran into this issue or have any insight on where to go from here? I've looked around but I couldn't find a post that the same as this issue. As a side note, I can get into the bootloader just fine.
I appreciate any info that someone can provide.

Flash twrp. Reboot back to recovery from recovery. Reboot system.
Hopefully it's that easy. Stock os flashes stock recovery on boot. Rebooting recovery from recovery prevents that from happening.
From TWRP:
"Note many devices will replace your custom recovery automatically during first boot.... Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP. If you don't follow this step, you will have to repeat the install."
mxpe 6.0

Thanks for the info ffejy462. What happens when I try to flash TWRP and it doesnt stick? I know for a fact that I can boot into it temporarily with fastboot boot and the recovery file. Should I just flash it from there?

THEFILLTER said:
Thanks for the info ffejy462. What happens when I try to flash TWRP and it doesnt stick? I know for a fact that I can boot into it temporarily with fastboot boot and the recovery file. Should I just flash it from there?
Click to expand...
Click to collapse
I'm sorry I didn't see this sooner. Flash recovery with fastboot. Boot into recovery. From reboot menu in recovery, select reboot recovery. Twrp will patch so recovery isn't lost again.
mxpe 6.0

That did it. thanks alot ffejy462!

Nexus 6p with Android 7.0 in bootloop cannot access recovery

Hi Guys,
I'm Kinda new about making a new thread, so if anything's wrong let me know.
Just last evening my nexus 6p (on Android 7.0 official) got into a boot loop from a normal state. It just boots & right after when the white google logo transforms into 4 round object, it just reboots (it takes about 3-5 secs). I can access the boot loader but was unable to access to recovery from there as that takes it to bootloop again. I've tried flashing it, but since i had already updated to Nougat official version & the official image for 6p is yet to come, i tried with some earlier version of Marshmallow. but that failed as well. can it be that i need to select the right version of factory image as i really do not remember my old marshmallow versions anymore.
It seems i'm out of options right now. :crying:
Any advice guys??
TIA

Found this on Nexus 6p help forum. Haven't tried it though so I'm unable to confirm if it works or not.
https://productforums.google.com/forum/#!topic/nexus/hdrNONCCoNE

@sirluigi, this EXACT thing just happened to me ..
stock nougat, only bootloader unlocked ((( and since I've got no access to recovery and no Nougat image, I don't know what to do next
minicoop7, unfortunately, for that guide I need to go into recovery mode

ciocu said:
@sirluigi, this EXACT thing just happened to me ..
stock nougat, only bootloader unlocked ((( and since I've got no access to recovery and no Nougat image, I don't know what to do next
minicoop7, unfortunately, for that guide I need to go into recovery mode
Click to expand...
Click to collapse
Have you tried using fastboot to temp boot to recovery?

fastboot boot twrp-3.0.2-1-angler.img
downloading 'boot.img'...
OKAY [ 0.409s]
booting...
OKAY [ 0.680s]
finished. total time: 1.097s
Click to expand...
Click to collapse
same behavior, nothing but a bootloop
I'm dowloading an official MM image, just to get the stock recovery and see if I can temp boot in it
edit: not possible, I even tried to flash twrp, I tried flashing stock recovery from MTC20F.. tried to temp boot in both, all with no luck and with phone constantly alternating between the "Your device cannot be checked for corruption" screen and the white Google screen with the open lock.

sirluigi said:
Hi Guys,
I'm Kinda new about making a new thread, so if anything's wrong let me know.
Just last evening my nexus 6p (on Android 7.0 official) got into a boot loop from a normal state. It just boots & right after when the white google logo transforms into 4 round object, it just reboots (it takes about 3-5 secs). I can access the boot loader but was unable to access to recovery from there as that takes it to bootloop again. I've tried flashing it, but since i had already updated to Nougat official version & the official image for 6p is yet to come, i tried with some earlier version of Marshmallow. but that failed as well. can it be that i need to select the right version of factory image as i really do not remember my old marshmallow versions anymore.
It seems i'm out of options right now. :crying:
Any advice guys??
TIA
Click to expand...
Click to collapse
Guys its very simple, flash the stock mtc20f image first. After that boot it, it wont work but don't worry. Onece it bootloops go into bootloader and fastboot flash twrp 3.0.2-0. once thats done boot into twrp recovery. Onece in twrp make a backup of the image you just flashed that don't work. Once thats done mount system in recovery. Once mounted plug phone into computer and open the twrp folder you will see on your internal wich will have the backup that you just made. Transfer an old working backup into that folder that way twrp will recognize that backup. Once the backup is in the folder you shoukd see 2 backups in there, your new one that doesn't boot and your old one that does work wich you just put into the twrp folder. Once done go to restore and restore the backup of the working rom you just put in there, make sure to check off all on restore. Once done reboot system and it should boot. This will only work if you have a backup of an old working rom.
---------- Post added at 01:13 AM ---------- Previous post was at 01:00 AM ----------
sirluigi said:
Hi Guys,
I'm Kinda new about making a new thread, so if anything's wrong let me know.
Just last evening my nexus 6p (on Android 7.0 official) got into a boot loop from a normal state. It just boots & right after when the white google logo transforms into 4 round object, it just reboots (it takes about 3-5 secs). I can access the boot loader but was unable to access to recovery from there as that takes it to bootloop again. I've tried flashing it, but since i had already updated to Nougat official version & the official image for 6p is yet to come, i tried with some earlier version of Marshmallow. but that failed as well. can it be that i need to select the right version of factory image as i really do not remember my old marshmallow versions anymore.
It seems i'm out of options right now. :crying:
Any advice guys??
TIA
Click to expand...
Click to collapse
OMG I finally got mine to work
I'll note down the exact steps , most of which may or may not be relevant
1) Flashed MTC20F using TWRP 3.0.2-1
2) Booted into recovery and wiped everything and the partitions
- Add - Booted back into twrp 3.0.2-1 and then swiped to allow modifications
3) Then fastboot flashed TWRP 3.0.2-0
4) Restored my backup ( except recovery)
5) Still got stuck in the google screen.
Now the next parts are a bit weird
6) Booted into TWRP, flashed vendor.img from pure nexus rom
7) wiped everything except internal storage
8) Flashed vendor.img, pure nexus rom and gapps and then flashed vendor.img again
9) Rebooted and it worked
Let me know if it worked for you guys or if you need any more help

disbeyad999989 said:
Guys its very simple, flash the stock mtc20f image first. After that boot it, it wont work but don't worry. Onece it bootloops go into bootloader and fastboot flash twrp 3.0.2-0. once thats done boot into twrp recovery. Onece in twrp make a backup of the image you just flashed that don't work. Once thats done mount system in recovery. Once mounted plug phone into computer and open the twrp folder you will see on your internal wich will have the backup that you just made. Transfer an old working backup into that folder that way twrp will recognize that backup. Once the backup is in the folder you shoukd see 2 backups in there, your new one that doesn't boot and your old one that does work wich you just put into the twrp folder. Once done go to restore and restore the backup of the working rom you just put in there, make sure to check off all on restore. Once done reboot system and it should boot. This will only work if you have a backup of an old working rom.
---------- Post added at 01:13 AM ---------- Previous post was at 01:00 AM ----------
OMG I finally got mine to work
I'll note down the exact steps , most of which may or may not be relevant
1) Flashed MTC20F using TWRP 3.0.2-1
2) Booted into recovery and wiped everything and the partitions
- Add - Booted back into twrp 3.0.2-1 and then swiped to allow modifications
3) Then fastboot flashed TWRP 3.0.2-0
4) Restored my backup ( except recovery)
5) Still got stuck in the google screen.
Now the next parts are a bit weird
6) Booted into TWRP, flashed vendor.img from pure nexus rom
7) wiped everything except internal storage
8) Flashed vendor.img, pure nexus rom and gapps and then flashed vendor.img again
9) Rebooted and it worked
Let me know if it worked for you guys or if you need any more help
Click to expand...
Click to collapse
Unfortunately, this didn't work for me.

I believe you should be fine with just trying to flash an earlier recovery version using fastboot... if you're trying to save your data and then factory flash MM and then restore your data to the phone, you should be able to use fastboot pull and then copy them back once you've got a working device by simple copy from windows.

disbeyad999989 said:
Guys its very simple, flash the stock mtc20f image first. After that boot it, it wont work but don't worry. Onece it bootloops go into bootloader and fastboot flash twrp 3.0.2-0. once thats done boot into twrp recovery. Onece in twrp make a backup of the image you just flashed that don't work. Once thats done mount system in recovery. Once mounted plug phone into computer and open the twrp folder you will see on your internal wich will have the backup that you just made. Transfer an old working backup into that folder that way twrp will recognize that backup. Once the backup is in the folder you shoukd see 2 backups in there, your new one that doesn't boot and your old one that does work wich you just put into the twrp folder. Once done go to restore and restore the backup of the working rom you just put in there, make sure to check off all on restore. Once done reboot system and it should boot. This will only work if you have a backup of an old working rom.
---------- Post added at 01:13 AM ---------- Previous post was at 01:00 AM ----------
OMG I finally got mine to work
I'll note down the exact steps , most of which may or may not be relevant
1) Flashed MTC20F using TWRP 3.0.2-1
2) Booted into recovery and wiped everything and the partitions
- Add - Booted back into twrp 3.0.2-1 and then swiped to allow modifications
3) Then fastboot flashed TWRP 3.0.2-0
4) Restored my backup ( except recovery)
5) Still got stuck in the google screen.
Now the next parts are a bit weird
6) Booted into TWRP, flashed vendor.img from pure nexus rom
7) wiped everything except internal storage
8) Flashed vendor.img, pure nexus rom and gapps and then flashed vendor.img again
9) Rebooted and it worked
Let me know if it worked for you guys or if you need any more help
Click to expand...
Click to collapse
Can you elaborate the steps pls? also have you had an earlier back up of your phone which i don't have?

Has anyone been able to get this to work without being able to get into TWRP? I can't get into recovery whether it is a temp boot to it, or fastboot flash either version..

I have compiled a list of the 20+ methods from various users in THIS thread. It's the second post.

Stuck in a bootloop still @tr4nqui1i7y but will try your methods as well... Fingers crossed..

So I do not if this may help anyone who as run into this issue but still may want to retrieve their data before formating their data or factory resetting. While running TWRP 3.0.3 and flashing the latest 7.1.1 files for angler. I would sometimes be able to boot into the recovery like 3/10 tries ( from the bootloader menu). My data was encrypted and it woul freeze constantly when trying to decrypt soo i decided once I finally got it to boot again in the recovery menu(TWRP after hours mind you) I let the phone stay idle for a few mins should the cpu would cool down that my battery percentage would drop around 41% and the tried to decrypt data which went tru successfully. I retrieve what I Could and it froze during a process of a nandroid backup and started bootlooping again. I believe the battery percentage may be linked to the early shutdown issues that many user were reported having and the bootloop of death we are experiencing. Hopefully this info may help someone else.

TWRP Stuck after upgrade to Nougat

Hello everyone,
i just flashed the newest Pure Nexus Rom and everything went fine.
I forgot to flash the SuperSU Zip so i tried to got back into TWRP, but now it stuck.
The System boots normally, only TWRP wont boot.
Anyone had that problem too?

if anyone else has the same issue, here is the answer:
I forgot to erase the userdata or cache.
If you have the same problem use fastboot!
fastboot format cache
fastboot format userdata
Then it should work again.
(Everything on your own risk)

If you dont flah SuperSU asap, TWRP will not stick on reboot (w nougat). That was the issue.

No SuperSU was not the problem.
It happened before i flashed the SuperSU zip.
As far as i know, there is a problem if you upgrade to Nougat and dont format the userdata and cache because of the encryption or sth like that.

kaufikauf said:
No SuperSU was not the problem.
It happened before i flashed the SuperSU zip.
As far as i know, there is a problem if you upgrade to Nougat and dont format the userdata and cache because of the encryption or sth like that.
Click to expand...
Click to collapse
Exactly. It happened before you flashed SuperSU zip. Not flashing SuperSU caused your problem. It needs to be flashed the first time you go into TWRP or you won't be able to boot back into TWRP. The previous poster is correct.

Maybe we talk about different problems
Ive formatted cache and userdata yesterday,
now i can go back into twrp.
(SuperSU is not flashed now).
Just tried it, works perfectly!

kaufikauf said:
No SuperSU was not the problem.
It happened before i flashed the SuperSU zip.
As far as i know, there is a problem if you upgrade to Nougat and dont format the userdata and cache because of the encryption or sth like that.
Click to expand...
Click to collapse
I never, ever flash userdata, and never had an issue.
We can agree to disagree. Either the other poster and I arent understanding your question, or you arent understanding our reply. It's cool, it happens.
But TWRP not sticking is due to not running SuperSU at the end of the install process. It wont stick.

And now i know the misunderstanding!
My sentence was a little bit silly formulated:
It didnt stuck by flashing SuperSU. I just forgot to do that and when i recognized this, i want to boot into recovery. Then i recognized the bootloop.
So SuperSU as itself was not involved. By the way BeansTown wrote in the Thread for PureNexus Rom that you have to format your userdata (normally over TWRP).
Shame on me that i didnt read before start flashing

kaufikauf said:
And now i know the misunderstanding!
My sentence was a little bit silly formulated:
It didnt stuck by flashing SuperSU. I just forgot to do that and when i recognized this, i want to boot into recovery. Then i recognized the bootloop.
So SuperSU as itself was not involved. By the way BeansTown wrote in the Thread for PureNexus Rom that you have to format your userdata (normally over TWRP).
Shame on me that i didnt read before start flashing
Click to expand...
Click to collapse
You should take a look at this post in the official TWRP thread for a clearer reason why.

SlimSnoopOS said:
You should take a look at this post in the official TWRP thread for a clearer reason why.
Click to expand...
Click to collapse
So I followed the guide and updated to 7.1.1 and did the normal "fastboot flash recovery xxx" then "fastboot reboot bootlader" then rebooted it via phone I go to "Recovery" from my phone and I get a screen saying "No Command" I tried to flash twrp-3.0.3-0-angler.img
Did I miss something?

USFguy said:
So I followed the guide and updated to 7.1.1 and did the normal "fastboot flash recovery xxx" then "fastboot reboot bootlader" then rebooted it via phone I go to "Recovery" from my phone and I get a screen saying "No Command" I tried to flash twrp-3.0.3-0-angler.img
Did I miss something?
Click to expand...
Click to collapse
After flashing TWRP from the bootloader, go directly into recovery and flash SuperSU 2.78 or newer to make it stick permanently.
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
After flashing TWRP from the bootloader, go directly into recovery and flash SuperSU 2.78 or newer to make it stick permanently.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
It won't boot into recovery, I flash recovery, unplug device hit recovery boot and it boot loops once then boots normally....

USFguy said:
It won't boot into recovery, I flash recovery, unplug device hit recovery boot and it boot loops once then boots normally....
Click to expand...
Click to collapse
Hmm. If you are on stock, reflash the boot, system, recovery, and vendor from the factory image that matches your stock, security update. Restart the phone and boot into Android. Restart into the bootloader then fastboot flash recovery TWRP-angler.img. See if it lets you boot into TWRP then. If not, try an older version of TWRP and see if that will flash and allow you to boot into it.
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
Hmm. If you are on stock, reflash the boot, system, recovery, and vendor from the factory image that matches your stock, security update. Restart the phone and boot into Android. Restart into the bootloader then fastboot flash recovery TWRP-angler.img. See if it lets you boot into TWRP then. If not, try an older version of TWRP and see if that will flash and allow you to boot into it.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
Tried that, ended up going down an update in TWRP and it worked, weird....

I had a similar issue and I had to go back in and reflash Recovery image to recovery partition and all was well

TWRP Mount Decrypt Data

I purchased a used Nexus 6p from ebay. I've unlocked the bootloader and installed TWRP. When I boot into recovery, I get a screen that's titled, "Mount Decrpt Data". It wants me to enter a password. I don't have the password. What are my options?
I want to root the phone and install custom ROMs.

@msmcintosh- The 6P defaults to data encryption on first boot. You need to do a factory reset and before booting to the OS install TWRP and then boot back into TWRP (reboot recovery). If you want to keep your data unencrypted you now have to either flash SuperSU or a custom kernel. Either of these will disable the force encrypt flag. Also make sure you are installing v3.1.1.0.

v12xke said:
@msmcintosh- The 6P defaults to data encryption on first boot. You need to do a factory reset and before booting to the OS install TWRP and then boot back into TWRP (reboot recovery). If you want to keep your data unencrypted you now have to either flash SuperSU or a custom kernel. Either of these will disable the force encrypt flag. Also make sure you are installing v3.1.1.0.
Click to expand...
Click to collapse
I managed to screw it up. I'm stuck at the Google screen. I can boot into TWRP. I had tried to install Pure Nexus, GApps, Magisk and Franco kernel, but obviously didn't do it correctly. How can I recover my phone?
Uppdate: I download and installed the Oreo factory image and flashed it. Then TWRP. Now to figure out what went wrong flashing Pure Nexus. I'm coming from a nexus 6.

msmcintosh said:
I managed to screw it up. I'm stuck at the Google screen. I can boot into TWRP. I had tried to install Pure Nexus, GApps, Magisk and Franco kernel, but obviously didn't do it correctly. How can I recover my phone?
Uppdate: I download and installed the Oreo factory image and flashed it. Then TWRP. Now to figure out what went wrong flashing Pure Nexus. I'm coming from a nexus 6.
Click to expand...
Click to collapse
I keep screwing this up. I have TWRP, factory Oreo, rooted with Magisk. I made a backup in TWRP. I per Pure Nexus instruction, I installed the Vendor image, Pure Nexus ROM, GApps and Magisk. The system won't boot. Gets stuck at the Google screen. Can't boot into TWRP either. I can reflash TWRP, but the backup is no good (gets stuck at Google screen). I end up reflashing the factory image and TWRP. Then it will boot into Android.
I'm not sure what I'm doing wrong. It was easy to do this on my Nexus 6.

msmcintosh said:
I keep screwing this up. I have TWRP, factory Oreo, rooted with Magisk. I made a backup in TWRP. I per Pure Nexus instruction, I installed the Vendor image, Pure Nexus ROM, GApps and Magisk. The system won't boot. Gets stuck at the Google screen. Can't boot into TWRP either. I can reflash TWRP, but the backup is no good (gets stuck at Google screen). I end up reflashing the factory image and TWRP. Then it will boot into Android. I'm not sure what I'm doing wrong. It was easy to do this on my Nexus 6.
Click to expand...
Click to collapse
Not sure what you are doing wrong with the clean PN install, but you can't downgrade from O to N by flashing an older PN ROM. You may get more specific help in the dedicated PN install thread by nathanchance.

v12xke said:
Not sure what you are doing wrong with the clean PN install, but you can't downgrade from O to N by flashing an older PN ROM. You may get more specific help in the dedicated PN install thread by nathanchance.
Click to expand...
Click to collapse
I ended up flashing Nitrogen O, which worked. Thanks.

TWRP install impossible, phone doesn't make it past fastboot splash screen

Hey guys,
I just oem unlocked my new 6T and have access to the bootloader. As I try to install TWRP with
HTML:
fastboot boot imagename.img
my computer says that it pushes the image just fine, but my phone restarts and then never makes it past the fastboot splash screen instead of loading up TWRP.
I was following the fajita (6T) instructions from the lineage OS website.
The first time I did it it worked, but following the instructions on installing lineage and telling me to wipe and format data, both the recovery seems to be gone and i cannot fastboot boot into TWRP.
Can you help?

Seems the same with what i experienced. Have you tried installing a fastboot rom? I had my oneplus 6t bootlooped into fastboot mode even if i try to turn it off, it just boots back automatically to fastboot mode. Last resort was to flash a fastboot rom. That worked for me.

thalesian2020 said:
Hey guys,
I just oem unlocked my new 6T and have access to the bootloader. As I try to install TWRP with
HTML:
fastboot boot imagename.img
my computer says that it pushes the image just fine, but my phone restarts and then never makes it past the fastboot splash screen instead of loading up TWRP.
I was following the fajita (6T) instructions from the lineage OS website.
The first time I did it it worked, but following the instructions on installing lineage and telling me to wipe and format data, both the recovery seems to be gone and i cannot fastboot boot into TWRP.
Can you help?
Click to expand...
Click to collapse
What TWRP version are you trying to install?

jp0469 said:
What TWRP version are you trying to install?
Click to expand...
Click to collapse
I tried 3.3.1.1. and 3.2.3.0.

What you are describing, I'm going to assume you are trying to install Lineage 17. You can't install TWRP if you are going Android 10, at least that's the conclusion I've come to at this point in time. It will fail to boot or end up in crash dump mode every time you try and enter recovery if you are on a custom ROM. If you are on Android 9, it's not an issue. I believe it's OK stock as well, but I don't know haven't tried, haven't been stock in a long time.
For LOS 17, only boot the TWRP image, never boot to recovery, never run the TWRP installer. You will likely still have to format data.
I have a post here, from when I had a similar issue. (instructions)
You'll notice the OmniRom instructions don't mention installing TWRP, only booting it.
Once I was in your spot, I always went back to stock using the fastboot ROM, installed TWRP, updated (still using TWRP), then started over with my install.

Well no, i was actually trying to install Lineage 16, which is Android 9 I believe.
The problem for me is that I do not get to the point where TWRP opens after "fastboot boot"ing it. So I understand, I should use a fastboot stock ROM? Is there such a thing? Where would I find it? Or would it be an OnePlus Oxygen ROM that I can fastboot?

Quickest way to start over:
To get back straight your gonna need to access a Windows PC, and run the MSM tool. Make sure you install both OnePlus and Qualcomm drivers. ( Don't wait for Windows, just pre install the drivers) here are some links. Not my work. Please be sure to thank the developers for creating and hosting these tools ?
MSM Tool:
https://forum.xda-developers.com/oneplus-6t/how-to/tool-6t-msmdownloadtool-v4-0-oos-9-0-5-t3867448
OnePlus Drivers:
https://androidfilehost.com/?fid=11410963190603879743
Qualcomm drivers:
https://androidfilehost.com/?fid=11410963190603879743

thalesian2020 said:
Well no, i was actually trying to install Lineage 16, which is Android 9 I believe.
The problem for me is that I do not get to the point where TWRP opens after "fastboot boot"ing it. So I understand, I should use a fastboot stock ROM? Is there such a thing? Where would I find it? Or would it be an OnePlus Oxygen ROM that I can fastboot?
Click to expand...
Click to collapse
Were you on Android 10 before (OOS)? That will do that. LOS 16 is Android 9 and should have no problems installing TWRP or booting to it.. For LOS 16 I'd go back to 9.0.17, then install LOS 6T.
I posted these LOS install instructions a long time ago for another user.
Remember the MSM Tool will relock your bootloader so if something goes wrong the MSM Tool is your only choice. That is why it is always the last thing I resort to.
Thread to get Fastboot stock Roms if you want to try that route first.

Hey guys,
thank you so much for all your help. I've managed to use mauronofrios workaround here on xda to put my phone in a 9.0.17 state again (no idea what i had originally), and this way i could fastboot the twrp image again. so that worked fine, but so far flashing lineage hasnt worked, for whatever reason it seems to boot into a lineageos kind of recovery only (which i didnt even know existed).
So i guess in terms of this thread the problem is solved. Thank you again!

thalesian2020 said:
Hey guys,
thank you so much for all your help. I've managed to use mauronofrios workaround here on xda to put my phone in a 9.0.17 state again (no idea what i had originally), and this way i could fastboot the twrp image again. so that worked fine, but so far flashing lineage hasnt worked, for whatever reason it seems to boot into a lineageos kind of recovery only (which i didnt even know existed).
So i guess in terms of this thread the problem is solved. Thank you again!
Click to expand...
Click to collapse
Did you see my Lineage install instructions above? LOS installs its on Recovery when you flash the ROM. When om Android 9, boot TWRP, flash the TWRP installer, reboot to Recovery, install LOS 16, flash the TWRP installer again (replaces the LOS recovery that was installed), reboot to Recovery, install gapps / magisk if desired, reboot.
Read my instructions post though, the first time install is different, as you need LOS on both slots. Updating is different as well, its much easier.
It should go smoothly.

OhioYJ said:
Did you see my Lineage install instructions above? LOS installs its on Recovery when you flash the ROM. When om Android 9, boot TWRP, flash the TWRP installer, reboot to Recovery, install LOS 16, flash the TWRP installer again (replaces the LOS recovery that was installed), reboot to Recovery, install gapps / magisk if desired, reboot.
Read my instructions post though, the first time install is different, as you need LOS on both slots. Updating is different as well, its much easier.
It should go smoothly.
Click to expand...
Click to collapse
Do I need to be on Android 9 Stock when I start that process? What I did was boot into TWRP, flash TWRP installer, reboot into recovery, then format and wipe ALL partitions (except USB), then reboot into recovery again and then flash LOS, flash TWRP, reboot into recovery, flash LOS, flash TWRP, reboot system. Still no luck...

thalesian2020 said:
Do I need to be on Android 9 Stock when I start that process? What I did was boot into TWRP, flash TWRP installer, reboot into recovery, then format and wipe ALL partitions (except USB), then reboot into recovery again and then flash LOS, flash TWRP, reboot into recovery, flash LOS, flash TWRP, reboot system. Still no luck...
Click to expand...
Click to collapse
Wiping, Dalvik / ART, System, and Vendor is generally a bad idea. You can do them in certain situations, this isn't one of those situations you should be wiping those though. Factory reset, means the slider on the main page of the wipe screen that says swipe to factory reset, format data is the button that says format data. Don't do anything extra. If you did, yeah I would go back to 9.0.17 using the fastboot rom again, that will put everything back on both slots.

like OhioYJ stated, don't use advanced wipe. re-run the msm tool. Then follow his instuctions. You shouldn't need to preform any manual data wiping. The process of flashing will do everything required. looks like you're almost there

Thanks guys. I will try it out and let you know.
Edit: So I finally managed to properly install LOS - OhioYJ, your instructions worked! I installed 9.0.17 and went from there without wiping any additional partitions.
One questions remains: in your instructions you mention that after installing LOS once, you can update LOS as normal and you mention doing it via the recovery with flashing TWRP or GAPPS later again. Is it possible to do the update via the normal update function of LOS as well? Or will that overwrite TWRP?
You guys are awesome. Thank you so much for your help!

I seem to be stuck on the fastboot screen as well. Being on a MAC, anytime i try to do something in fastboot it goes straight back to the fastboot screen. I Thought I was on Android 10.0 trying to install recovery for that lead to bootloop of fastboot, tried using the Pie recovery and same thing. I am open to suggestions.
Thanks.

OhioYJ said:
What you are describing, I'm going to assume you are trying to install Lineage 17. You can't install TWRP if you are going Android 10, at least that's the conclusion I've come to at this point in time. It will fail to boot or end up in crash dump mode every time you try and enter recovery if you are on a custom ROM. If you are on Android 9, it's not an issue. I believe it's OK stock as well, but I don't know haven't tried, haven't been stock in a long time.
For LOS 17, only boot the TWRP image, never boot to recovery, never run the TWRP installer. You will likely still have to format data.
I have a post here, from when I had a similar issue. (instructions)
You'll notice the OmniRom instructions don't mention installing TWRP, only booting it.
Once I was in your spot, I always went back to stock using the fastboot ROM, installed TWRP, updated (still using TWRP), then started over with my install.
Click to expand...
Click to collapse
Twrp is working fine with Android 10, using mauronofrio version and magisk 20.2

callumbr1 said:
Twrp is working fine with Android 10, using mauronofrio version and magisk 20.2
Click to expand...
Click to collapse
Yeah it starting to seem like it maybe isolated to Lineage. You cant install TWRP with LOS 17. Someone else mentioned in the Omni thread that it worked. This thread is about Lineage, but that should be clarified, or clearer.