Database Users

[Q] Nexus 7 gets stuck booting. Tried reflashing stock OS multiple times.

I seem to have got myself into a bit of a pickle here.
I had a rooted N7 on 4.2.2. Tried to unroot (in lieu of going up to 4.3). Disaster struck! It wouldn't boot. It would just get stuck at the bootloader and go "Booting failed" or something similar.
So bother, I could get into the bootloader. So I tried to fastboot flash a stock image using this (http://forum.xda-developers.com/showthread.php?t=1907796) guide.
I got a bit further now, it would get the X loading screen but then no amount of waiting would have it boot.
So I tried factory reset from the recovery menu (the one with the Android and the red triangle).
No good, still did the same thing.
So I tried using Nexus Root Toolkit to flash stock + unroot from a soft-bricked/bootloop state. Nope! No good. Still does the same thing.
I've been through every combination of flashing, clearing, resetting but to no avail!
I've tried flashing CWM and TWRP but when I try to get into recovery mode, I just get the Google logo forever. This is a nightmare!
What's going on Have I managed to brick this thing...

evenstevens said:
I seem to have got myself into a bit of a pickle here.
I had a rooted N7 on 4.2.2. Tried to unroot (in lieu of going up to 4.3). Disaster struck! It wouldn't boot. It would just get stuck at the bootloader and go "Booting failed" or something similar.
So bother, I could get into the bootloader. So I tried to fastboot flash a stock image using this (http://forum.xda-developers.com/showthread.php?t=1907796) guide.
I got a bit further now, it would get the X loading screen but then no amount of waiting would have it boot.
So I tried factory reset from the recovery menu (the one with the Android and the red triangle).
No good, still did the same thing.
So I tried using Nexus Root Toolkit to flash stock + unroot from a soft-bricked/bootloop state. Nope! No good. Still does the same thing.
I've been through every combination of flashing, clearing, resetting but to no avail!
I've tried flashing CWM and TWRP but when I try to get into recovery mode, I just get the Google logo forever. This is a nightmare!
What's going on Have I managed to brick this thing...
Click to expand...
Click to collapse
Hey,
did you try doing all these manually :
Code:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot -w update image.zip
PS : Edit these according to images you are trying to flash.
You mentioned you tried the guide but try this once again.
Unlock your bootloader / keep your bootloader unlocked while doing this.
If you want to you can even try running the .bat files and / or .sh files while in the bootloader.
If it still doesnt work , download the latest custom recovery and just try flashing it through
Code:
fastboot flash recovery recovery.img
Please mention the errors you have a bit more in detail during these steps !

Red Devil said:
Hey,
did you try doing all these manually :
Code:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot -w update image.zip
PS : Edit these according to images you are trying to flash.
You mentioned you tried the guide but try this once again.
Unlock your bootloader / keep your bootloader unlocked while doing this.
If you want to you can even try running the .bat files and / or .sh files while in the bootloader.
If it still doesnt work , download the latest custom recovery and just try flashing it through
Code:
fastboot flash recovery recovery.img
Please mention the errors you have a bit more in detail during these steps !
Click to expand...
Click to collapse
Okay, I've managed to get TWRP up and running.
Now... how do I get a ROM onto there to try to flash? >_<
PS. I did all those commands manually many many times. It's got to a stage now where the X logo never actually comes up... Just the Google logo and the little padlock

evenstevens said:
Okay, I've managed to get TWRP up and running.
Now... how do I get a ROM onto there to try to flash? >_<
PS. I did all those commands manually many many times. It's got to a stage now where the X logo never actually comes up... Just the Google logo and the little padlock
Click to expand...
Click to collapse
Code:
adb sideload ROM.zip
in advance options > adb sideload
And about the ROM getting stuck at the Nexus boot animation , try getting a logcat.. maybe that will help. !

Red Devil said:
Code:
adb sideload ROM.zip
in advance options > adb sideload
And about the ROM getting stuck at the Nexus boot animation , try getting a logcat.. maybe that will help. !
Click to expand...
Click to collapse
Amazing. I actually managed to flash a copy of Cyanogen on there and it all booted perfectly.
Now I wonder if I can get it back to stock from here easily..
Thanks

evenstevens said:
Amazing. I actually managed to flash a copy of Cyanogen on there and it all booted perfectly.
Now I wonder if I can get it back to stock from here easily..
Thanks
Click to expand...
Click to collapse
You can ... just make sure you have downloaded the right factory images and flash the use the .bat / .sh to flash the images .. keep in mind that you will lose all your data including that on the internal sd. All the best

Red Devil said:
You can ... just make sure you have downloaded the right factory images and flash the use the .bat / .sh to flash the images .. keep in mind that you will lose all your data including that on the internal sd. All the best
Click to expand...
Click to collapse
So I tried to reflash a stock image... same issue again! Just freezing at the Google logo screen :/
Properly stumped as to why it's doing that. Maybe I'm stuck with Cyanogen...

evenstevens said:
So I tried to reflash a stock image... same issue again! Just freezing at the Google logo screen :/
Properly stumped as to why it's doing that. Maybe I'm stuck with Cyanogen...
Click to expand...
Click to collapse
So close...
Downloaded the new SDKs from Google and managed to actually flash and get into a stock version of Android... but it's constantly saying "Google keyboard has stopped working! Launcher has stopped working! etc" and it's practically useless
Gaaaaaaaaah

evenstevens said:
So close...
Downloaded the new SDKs from Google and managed to actually flash and get into a stock version of Android... but it's constantly saying "Google keyboard has stopped working! Launcher has stopped working! etc" and it's practically useless
Gaaaaaaaaah
Click to expand...
Click to collapse
Okay my solution to this:
Just keep flashing it with the flash-all.bat command until it just... worked.
Must've done it about 15 times.
Well that's that ordeal over.

updated to 4.4.1 stuck in boot animation!

Installed 4.4.1 via TWRP this morning, but it is stuck in reboot. Just keeps doing the colliding circles!
Tried rebooting a couple of times. Can get to fastboot, But device isn't seen by adb, and fastboot only shows start (no recovery option)
Any ideas at this point?

RedBullet said:
Installed 4.4.1 via TWRP this morning, but it is stuck in reboot. Just keeps doing the colliding circles!
Tried rebooting a couple of times. Can get to fastboot, But device isn't seen by adb, and fastboot only shows start (no recovery option)
Any ideas at this point?
Click to expand...
Click to collapse
I would recommend flashing the 4.4 stock factory image from here in fastboot mode. Then once your device is booting up properly again I would recommend taking a look at this guide to properly install the 4.4.1 update.

You MUST either side load or safer still, un-root(if rooted) and flash stock recovery and sideload and then re-flash custom recovery and re-root if needed.
If you are able to get to fastboot:
Fastboot flash recovery recovery.img ( use stock)
Fastboot reboot-bootloader
go into to stock recovery - wait for dead droid, one you see him, go into recovery by holding volume+ and power at same time
follow the orange instructions to sideload via adb - which should now work
reboot and validate all is well
reboot into bootloader and re-flash your custom recovery and root (if needed)
Enjoy.

planet_x69 said:
You MUST either side load or safer still, un-root(if rooted) and flash stock recovery and sideload and then re-flash custom recovery and re-root if needed.
If you are able to get to fastboot:
Fastboot flash recovery recovery.img ( use stock)
Fastboot reboot-bootloader
go into to stock recovery - wait for dead droid, one you see him, go into recovery by holding volume+ and power at same time
follow the orange instructions to sideload via adb - which should now work
reboot and validate all is well
reboot into bootloader and re-flash your custom recovery and root (if needed)
Enjoy.
Click to expand...
Click to collapse
Thanks, I eventually got it. I was really puzzled that I couldn't select recovery from the bootloader. All set now though, thanks!

I hae also updated to 4.4.2 but now my N10 is stuck at the Google start page. Please help?

jalize said:
I hae also updated to 4.4.2 but now my N10 is stuck at the Google start page. Please help?
Click to expand...
Click to collapse
If you mean stuck at boot animation, then I suspect you used TWRP to flash?
I found that TWRP was not able to clear caches, so I use CWM instead. Worked like a champ...

RedBullet said:
If you mean stuck at boot animation, then I suspect you used TWRP to flash?
I found that TWRP was not able to clear caches, so I use CWM instead. Worked like a champ...
Click to expand...
Click to collapse
No I used the adb sideload command for the OTA. That all went well but now I'm stuck at the google page even before the animations begin!

jalize said:
No I used the adb sideload command for the OTA. That all went well but now I'm stuck at the google page even before the animations begin!
Click to expand...
Click to collapse
Hold volume up and power to get it to recycle, and immediately hold all three buttons down to get to bootloader. Try clearing your caches from recovery

RedBullet said:
Hold volume up and power to get it to recycle, and immediately hold all three buttons down to get to bootloader. Try clearing your caches from recovery
Click to expand...
Click to collapse
Tried that already, still stuck at Google page before animations. Everything is stock on this tablet with root.

jalize said:
Tried that already, still stuck at Google page before animations. Everything is stock on this tablet with root.
Click to expand...
Click to collapse
Hi,
Try flashing it fresh stock again, factory reset your device from recovery, download the stock image file from here, untar it, then unzip the zip inside the tar and you'll get some files (.img). Copy those files to your fastboot folder and then open a cmd there. (Guessing that you're using Windows)
Code:
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash cache cache.img
If you're using Linux, do the same, but instead of only fastboot use:
Code:
sudo ./fastboot
Then boot it. I had the same problem when I updated mine to 4.4.1, but I did one thing a little different... Instead of fully "stocking" it again, I flashed back 4.3, flashed 4.4 OTA and then let it boot, without wiping my data, after all it was running like this before. Worked. But as I'm unsure of your situation I think it's more secure and easier to fully stock it again.
Hope this helps,
~Lord
PS.: Remember to put your device in fastboot mode!

Help Installing/Booting TWRP on Oreo

Using the 2017 Shield I am not able to fastboot boot twrp.img, when attempting to do so (using 3.0.2, 3.1.1, 3.2) it results in a momentary Nivida logo, then the display output stops, requiring a hard reboot.
I am able to fastboot flash recovery and boot into TWRP but once I've done this it causes a boot freeze, displaying the Nivida logo indefinitely.
I feel certain there is something I've missed, I've had this same experience on two Shield units so far.

w0rdie said:
Using the 2017 Shield I am not able to fastboot boot twrp.img, when attempting to do so (using 3.0.2, 3.1.1, 3.2) it results in a momentary Nivida logo, then the display output stops, requiring a hard reboot.
I am able to fastboot flash recovery and boot into TWRP but once I've done this it causes a boot freeze, displaying the Nivida logo indefinitely.
I feel certain there is something I've missed, I've had this same experience on two Shield units so far.
Click to expand...
Click to collapse
are you on a 4k tv, if so that is your problem twrp for the shield will not show on 4k

jionny said:
are you on a 4k tv, if so that is your problem twrp for the shield will not show on 4k
Click to expand...
Click to collapse

I had the same issues, tried different monitors (non 4K), gave up and used magisk for root. I use flashfire for backups and flashing zips. Installed xposed through magisk. I don't think i have a need for TWRP after all the bootloops and issues. I had to reflash the stock image everytime to get it to boot. I am running version 7.0.2.

Did you make sure to install the Nvidia Family Drivers for ADB. I had to uninstall ADB Composite Device and also delete driver files. I then rescanned after plugging back into PC, it was listed as ADB Composite under USB devices. Updated the driver with the Nvidia Family Driver. Haven't had an issue since.

Michajin said:
I had the same issues, tried different monitors (non 4K), gave up and used magisk for root. I use flashfire for backups and flashing zips. Installed xposed through magisk. I don't think i have a need for TWRP after all the bootloops and issues. I had to reflash the stock image everytime to get it to boot. I am running version 7.0.2.
Click to expand...
Click to collapse
I'll have to look into flashfire, as I've seen the same suggestion pop up elsewhere. Any tips on how to install Magisk on the Shield? I've attempted several times with as many methods I could find through several threads, and they've all failed in one way or another. Did you have to use a specific version of Magisk?
Also, I currently have TWRP flashed on my Shield. I've been reading that the new Oreo doesn't play nicely with TWRP and may be prone to bricking and bootloops. I eventually want to upgrade mostly to prevent the nag screen. Is there a way to install the stock bootloader without wiping the device and flashing the stock image?

thekwijibo said:
I'll have to look into flashfire, as I've seen the same suggestion pop up elsewhere. Any tips on how to install Magisk on the Shield? I've attempted several times with as many methods I could find through several threads, and they've all failed in one way or another. Did you have to use a specific version of Magisk?
Also, I currently have TWRP flashed on my Shield. I've been reading that the new Oreo doesn't play nicely with TWRP and may be prone to bricking and bootloops. I eventually want to upgrade mostly to prevent the nag screen. Is there a way to install the stock bootloader without wiping the device and flashing the stock image?
Click to expand...
Click to collapse
If i am understanding you, you are on Nougat and want to go on to Oreo? I have Magisk on Oreo.
I am on Oreo but i couldn't get TWRP to work. You could flash back to stock recovery; (download stock image from NVidia whatever version you are on)
fastboot flash recovery recovery.img
Use the recovery.img from the stock image that matches your current OS
I took the boot.img from the stock OS image put it in a location on my sheild i could access from file manager then patched it with magisk (latest version), then flashed it from fastboot
fastboot flash boot boot.img
"boot.img" being the one you patched with magisk.
None of this should wipe anything unless you unlock/lock the bootloader.

Michajin said:
If i am understanding you, you are on Nougat and want to go on to Oreo? I have Magisk on Oreo.
I am on Oreo but i couldn't get TWRP to work. You could flash back to stock recovery; (download stock image from NVidia whatever version you are on)
fastboot flash recovery recovery.img
Use the recovery.img from the stock image that matches your current OS
I took the boot.img from the stock OS image put it in a location on my sheild i could access from file manager then patched it with magisk (latest version), then flashed it from fastboot
fastboot flash boot boot.img
"boot.img" being the one you patched with magisk.
None of this should wipe anything unless you unlock/lock the bootloader.
Click to expand...
Click to collapse
Awesome. Thanks for the clarification. It worked, I flashed the recovery.img and I was able to install the OTA update.
I was able to use Magisk to patch the boot.img, however when I used fastboot to flash it to the shield, it didn't seem to do anything. I tried again with no improved results. I tried flashing the super.su zip that had worked for me before, and I ran into some bootloops, but was able to get things somewhat working again. I decided to scrap it, and try to flash the whole enchilada from the Nvidia image.
fastboot flash staging blob
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot flash vendor vendor.img
fastboot reboot
and..... brick. oops.
I was able to pull the power, plug in a keyboard, hold down A&B and managed to get into fastboot. Yay!
I suspected I might have skipped a step in there or rebooted prematurely, so I tried the process again.
This time I got the yellow bootloader warning, followed by the red system corrupt warning. I thought I had screwed it up, but after a few moments it finished booting. So, it "works", but takes a bit longer to boot due to the additional red warning screen.
Any suggestions on where I should go from here? I feel like I'm walking on thin ice with this additional red warning screen on boot.

thekwijibo said:
Awesome. Thanks for the clarification. It worked, I flashed the recovery.img and I was able to install the OTA update.
I was able to use Magisk to patch the boot.img, however when I used fastboot to flash it to the shield, it didn't seem to do anything. I tried again with no improved results. I tried flashing the super.su zip that had worked for me before, and I ran into some bootloops, but was able to get things somewhat working again. I decided to scrap it, and try to flash the whole enchilada from the Nvidia image.
fastboot flash staging blob
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot flash vendor vendor.img
fastboot reboot
and..... brick. oops.
I was able to pull the power, plug in a keyboard, hold down A&B and managed to get into fastboot. Yay!
I suspected I might have skipped a step in there or rebooted prematurely, so I tried the process again.
This time I got the yellow bootloader warning, followed by the red system corrupt warning. I thought I had screwed it up, but after a few moments it finished booting. So, it "works", but takes a bit longer to boot due to the additional red warning screen.
Any suggestions on where I should go from here? I feel like I'm walking on thin ice with this additional red warning screen on boot.
Click to expand...
Click to collapse
From magisk check root at that point, i didn't notice any difference until i open magisk and install the manager. I used the developer image from NVidia, flashed the 7.0.2 version then did the boot.img for magisk. The red warning screen? that the bootloader unlocked warning? If always used the flash-all.bat file so i didn't have to go line by line. I thought it would work either way, but maybe there is something more to the developers image i missed.

After I booted the magisk patched boot.img, the magisk application wouldn't load. It would just go to the splash screen with the logo image, and remain there indefinitely. I waited about 10 minutes, then FC it. Thereafter I couldn't even open the app until I rebooted, in which it would hang on the splash screen yet again. I tried to use apps that require root, and all apps indicated that I didn't have root. Oh well. I've had nothing but trouble with magisk on my shield, but it works flawlessly on all my other android devices. I'll have to keep futzing with it, because several people out there have successfully done so, and I must be totally missing some critical step along the way.
As for the warning screens, when I boot there's first the yellow bootloader unlocked warning, which I'm used to. After that goes away, just a black screen, then a few moments later a red warning screen pops up saying:
"Your device is corrupt. It can't be trusted and may not work properly".... yadda yadda yadda.
This stays on for a while, and at first I might have prematurely assumed I bricked my device, but it eventually boots. It takes about twice as long to boot now, but it eventually does.
I downloaded and flashed the developer's image from the Nvidia site as well, and followed the flashing instructions exactly as the attached documented steps indicated. Perhaps I ought to try the stock image next? If that doesn't work, I'm assuming I'll have to completely wipe and factory reset the device, then flash as stock image. The red warning corruption warning has me slightly worried, but mostly irritated that it takes my shield twice as long to boot now. (ok, maybe not twice as long, but at about 30 seconds longer)
I'm curious, where did you find the flash-all.bat? I'm wondering if there is some secret squirrel command that I neglected that wound me up in this situation. Or maybe the dual warning screens is "normal" for those using the developer image?

Google Pixel 3a (sargo) brick - error boot prepare

Hi,
Today I wanted change my recovery. I had the Lineage OS recovery, but i was trying to install the twrp recovery.
So, the guide of twrp says that you should boot the twrp via fastboot boot twrp.img and install via the booted twrp. But I mistaken the command and I wrote fastboot flash boot twrp.img, I tried to reboot and the device booted himself in fastboot with the enter reason "error boot prepare" and I can't boot into the system or recovery.
I tried to flash the official image downloaded from the Google Developers website, but when i run ./flash-all.sh, console get stuck. I waited for about 15 minutes but nothing. I tried even the official Android Flash Tool but after 10 seconds it says "Your device stopped responding. You may have to select restart in the bootloader menu in order for it to be recognised again."
Does anyone know how to help me? Thanks in advance.

GioPan_ said:
Hi,
Today I wanted change my recovery. I had the Lineage OS recovery, but i was trying to install the twrp recovery.
So, the guide of twrp says that you should boot the twrp via fastboot boot twrp.img and install via the booted twrp. But I mistaken the command and I wrote fastboot flash boot twrp.img, I tried to reboot and the device booted himself in fastboot with the enter reason "error boot prepare" and I can't boot into the system or recovery.
I tried to flash the official image downloaded from the Google Developers website, but when i run ./flash-all.sh, console get stuck. I waited for about 15 minutes but nothing. I tried even the official Android Flash Tool but after 10 seconds it says "Your device stopped responding. You may have to select restart in the bootloader menu in order for it to be recognised again."
Does anyone know how to help me? Thanks in advance.
Click to expand...
Click to collapse
Do you have tryied to run the official google tool in Windows to try to rescue it?

Estebiu said:
Do you have tryied to run the official google tool in Windows to try to rescue it?
Click to expand...
Click to collapse
Yes, I wrote in the post, I tried both the command line tool and the chrome version. Btw i'm on linux

Okay so, I fixed.
For anyone who will have this problem you just need to flash official Android 9 and next Android 10. Only with Android 10 you can use fastboot flash boot recovery.img (you can't use twrp in android 10 with the Pixel 3a)

GioPan_ said:
Okay so, I fixed.
For anyone who will have this problem you just need to flash official Android 9 and next Android 10. Only with Android 10 you can use fastboot flash boot recovery.img (you can't use twrp in android 10 with the Pixel 3a)
Click to expand...
Click to collapse
I'll try this...

GioPan_ said:
Okay so, I fixed.
For anyone who will have this problem you just need to flash official Android 9 and next Android 10. Only with Android 10 you can use fastboot flash boot recovery.img (you can't use twrp in android 10 with the Pixel 3a)
Click to expand...
Click to collapse
Does this work if adb not working? I only have fastboot.

WriteLovey said:
Does this work if adb not working? I only have fastboot.
Click to expand...
Click to collapse
It depends if your pc were authorized, if it was, you can use fastboot to flash the stock version of Android 9, just running the flash-all(.bat) script.

GioPan_ said:
It depends if your pc were authorized, if it was, you can use fastboot to flash the stock version of Android 9, just running the flash-all(.bat) script.
Click to expand...
Click to collapse
I'm not certain I understand what you mean by PC authorized? I'm using a Windows 10 tablet. When the phone is attached to the computer it sees it as a device that can be disconnected through USB.

WriteLovey said:
I'm not certain I understand what you mean by PC authorized? I'm using a Windows 10 tablet. When the phone is attached to the computer it sees it as a device that can be disconnected through USB.
Click to expand...
Click to collapse
All is well. I'm back on my Pixel, yeah!

GioPan_ said:
It depends if your pc were authorized, if it was, you can use fastboot to flash the stock version of Android 9, just running the flash-all(.bat) script.
Click to expand...
Click to collapse
I just had an encounter with this. I was rooting my device (Pixel 3A) and messed up my partitions through accidentally attempting a downgrade which broke all my ****. I was unable to easily reset this device to factory, so it took me several days to figure out and root. I'm getting better though as a hacker, because a year ago this would have taken me a month.
I was able to enter recovery mode (lying down Android, NO COMMAND). From this recovery mode, adb devices -l recognized my device, although I was unable to get a shell.
At first, ADB was telling me the device was authorized, but I messed with a bunch of other stuff (tried to flash a bunch of different partitions and monkey around in general trying to install Magisk) and then ADB started telling me it wasn't authorized when I used devices -l.
Once it said unauthorized, I was unable to issue the device any commands with ADB, so I just used hardware keys to get into recovery mode. From there, I selected OTA update, and it got into sideload mode. At that point, I used adb sideload with the OTA package that I downloaded here https://developers.google.com/android/ota
^^^ That operation did successfully restore my device to factory
This following guide here describes the details of how to use hard keys to enter recovery on this phone (don't download anything from there tho, and make sure your adblock is on)
How to Hard Reset your new Google Pixel 3a [Tutorial]
In this article, you will learn how to start your Google Pixel 3a up into the Recovery Mode and perform the Hard Reset to make it work perfectly again.
thedroidguy.com

I just wanted to say, I've been wrestling this hardbrick for a couple of days with my Pixel 3a.
I've finally overcome it by sideloading the most recent OTA update after using a hard key combo to get into recovery mode. The hard key combo is hold Power Button, tap Volume Up, then release both. Then, all you need is to use the command:
adb sideload <OTA.zip>
^^^OTA wasn't the actual filename though, you can download OTA packages for Pixel 3A here: https://developers.google.com/android/ota
the OTA binaries are NOT the same as the factory images, which is here
Factory Images for Nexus and Pixel Devices | Google Play services | Google for Developers
developers.google.com
Sideloading the OTA package brought my phone back from only having fastboot and recovery mode, even when flash-all.sh from the official downloaded firmware failed. Now I know how to undo damage that I cause by rooting this thing. Since I sideloaded newest firmware, it was also like applying an update. I easily got root after that, and I've logged the process. I'll make it into a guide soon

I'll just note that if you accidentally flashed the TWRP boot image instead of simply booting into it, I believe all you have to do is flash the stock boot.img to fix the problem. Obviously you can sideload the entire rom image, but that shouldn't be necessary.
Using the Windows computer (or whatever computer you are sending ADB commands from), download the full stock image directly from Google. Unzip it and then upzip the folder inside. You should find the boot.img file inside that folder. Take that file and then flash it to the phone using the normal ADB command: fastboot flash boot boot.img
While I haven't tried this myself recently, it should work in theory. The command "fastboot flash boot twrp.img" flashes the boot partition with a non-working twrp image, so replacing the faulty image with the stock boot.img should fix the problem.

If I did the same I would first attempt to manually put device in bootloader/aka fastboot mode then fastboot flash the stock boot.img , sudo fastboot flash boot boot.img --slot all
I only read the op (first post here);but I betcha that would have worked. Then sudo ./flash-all.sh and let it do it's thing.

Trying to flash TWRP but no success (stuck on Fastboot mode)

I have been on a journey trying to go back to my T-Mobile OnePlus 6T back as my daily driver but the official updates killed the device for me. I have been successful in flashing it to the international version and now the device is on A9. I am trying to get it updated to A10 but in order do that (does not take OTA updates or can not flash within the updates app) I have to flash in recovery. Right now it is on stock recovery so I am trying to flash TWRP.
The problem is now that everytime I run the command " fastboot boot IMAGENAME.img" the phone restarts (as expected) and boots into fastboot but stays stuck in the Fastboot Mode screen.
I tried different TWRP images (older and the most current version per https://dl.twrp.me/fajita/ ) but I keep getting stuck in the Fastboot Mode screen. The last thing I was able to do without issues was unlock bootloader using fastboot.
I just need to be able to flash TWRP on the phone so I can still the final stock image so I can go back to using it as my DD.
EDIT: Disregard everything I fixed it. mods, please delete thread.
EDITR 2: Disregard that last edit lol Yeah I still need help. I am now tryingto flash twrp on a second 6T and the issue described above still applies.

You can try this version. Also try unplugging the USB after it reboots. You aren't getting any crash dump screen? So it should be working.

Brettroth said:
You can try this version. Also try unplugging the USB after it reboots. You aren't getting any crash dump screen? So it should be working.
Click to expand...
Click to collapse
Tried your image and still same result. I am running following command
Code:
fastboot boot TWRP-3.6.1_11-OP6xT.img
The command window outputs the following
Code:
Sending 'boot.img' (34964 KB) OKAY [ 0.747s]
Booting OKAY [ 0.092s]
Finished. Total time: 0.860s
The phone then reboots into Fastboot Mode logo and stays stuck there. I even tried unplugging the USB after it reboots as well.
I even tried using the flash command instead of boot but no success.

How about fastboot boot recovery? Should be able to get into recovery somehow. Doing fastboot flash of twrp will mess up your boot partition but either way you still should be able to get into recovery somehow. There is the msm recovery tool you can use as last resort but it will relock your bootloader

Actually fastboot doesn't let you use boot recovery command I don't think. Only adb. But once you are in fastboot can't you choose to reboot recovery with volume keys?

Brettroth said:
How about fastboot boot recovery? Should be able to get into recovery somehow. Doing fastboot flash of twrp will mess up your boot partition but either way you still should be able to get into recovery somehow. There is the msm recovery tool you can use as last resort but it will relock your bootloader
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I tried doing fastboot boot recovery but i get following error
Code:
fastboot: error: cannot load 'recovery': No such file or directory
Brettroth said:
Actually fastboot doesn't let you use boot recovery command I don't think. Only adb. But once you are in fastboot can't you choose to reboot recovery with volume keys?
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When I am in fastboot mode, yes I can choose recovery but it takes me to the stock recovery. I do not have a option to flash any zip files there

Maybe you need a twrp for Android 9 since that's what you are on. But fastboot boot twrp should just take you there. Either have to find one that works or go msm route. Maybe windows not reading it correctly also. You using CMD or PowerShell?

Brettroth said:
Maybe you need a twrp for Android 9 since that's what you are on. But fastboot boot twrp should just take you there. Either have to find one that works or go msm route. Maybe windows not reading it correctly also. You using CMD or PowerShell?
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I tried both CMD and PowerShell. I am going to try a A9 version of twrp
EDIT: I am using twrp-3.6.1_9-0-fajita.img (which I assume is for A9) and still get the same result. Even tried a different usb port.. not sure what i could be missing. I also did the instructions as advised straight from twrp's website.

smartinez832 said:
I tried both CMD and PowerShell. I am going to try a A9 version of twrp
EDIT: I am using twrp-3.6.1_9-0-fajita.img (which I assume is for A9) and still get the same result. Even tried a different usb port.. not sure what i could be missing. I also did the instructions as advised straight from twrp's website.
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I don't know bud. I guess msm tool is the way to go then

Curious did you have the twrp file in same folder as adb and fastboot?

smartinez832 said:
I have been on a journey trying to go back to my T-Mobile OnePlus 6T back as my daily driver but the official updates killed the device for me. I have been successful in flashing it to the international version and now the device is on A9. I am trying to get it updated to A10 but in order do that (does not take OTA updates or can not flash within the updates app) I have to flash in recovery. Right now it is on stock recovery so I am trying to flash TWRP.
The problem is now that everytime I run the command " fastboot boot IMAGENAME.img" the phone restarts (as expected) and boots into fastboot but stays stuck in the Fastboot Mode screen.
I tried different TWRP images (older and the most current version per https://dl.twrp.me/fajita/ ) but I keep getting stuck in the Fastboot Mode screen. The last thing I was able to do without issues was unlock bootloader using fastboot.
I just need to be able to flash TWRP on the phone so I can still the final stock image so I can go back to using it as my DD.
EDIT: Disregard everything I fixed it. mods, please delete thread.
EDITR 2: Disregard that last edit lol Yeah I still need help. I am now tryingto flash twrp on a second 6T and the issue described above still applies.
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I'm having same issue with fajita (OnePlus 6T) you found any solution if yes then please give some reply