Unable to boot into newly-flashed recovery from fastboot (LineageOS 18.1) - OnePlus 6T Questions & Answers

Recently got a hold on the T-Mobile version of the OnePlus 6T. Already have a OnePlus5 running LineageOS as well and thought the installation would go as smooth.
Following these directions, I got through unlocking the bootloader (with the unlock_code.bin from OnePlus) and I thought I'd gone through flashing a custom recovery. I was able to boot into fastboot, ran # fastboot flash boot lineage-18.1-20210506-recovery-fajita.img, and shutoff the device. Now I'm stuck in a bootloop at the screen indicating that the device has been unlocked and data can't be verified.
While still connected to my PC, any combination of Power + Volume keys will flash the display and instantly go back to the bootload screen. The only way to shut-off the phone is to disconnect it and do either Power + Volume Up or Power + Volume Up + Volume Down; Power + Volume Down to try and boot into recovery does nothing. Plugging in the phone while off auto-starts it back to the bootload loop.
I can turn on the phone while disconnected, but the only way to escape the bootload loop is to boot straight into fastboot with Power + Volume Up + Volume Down. From here I can connect it to the computer and it's seen as a fastboot device. From here, however, any of the options will reboot into the bootloop.
Is there anything I can do from here? It's not a hard-brick, but I'm not sure why I'm stuck in a loop. The flashing of the recovery seems to have worked, no issues with A/B as stated could happen in the docs. I'm at a loss.
Code:
Sending 'boot_a' (65536 KB) OKAY [ 1.573s]
Writing 'boot_a' OKAY [ 0.365s]
Finished. Total time: 1.947s

Data can't be verified? It does let you run fastboot commands, just not send files?
Most people on this device use TWRP. I have a guide here.

OhioYJ said:
Data can't be verified? It does let you run fastboot commands, just not send files?
Most people on this device use TWRP. I have a guide here.
Click to expand...
Click to collapse
Yes, I can get the fastboot menu, but trying to boot from the lineage recovery image would take me straight to the warning page indicating the device is unlocked and to not store confidential data.
I just tried using the guide you posted to go with TWRP, but I'm having issues again with booting the recovery. Followed every step: downloaded the ROMs, flashed them all to the phone as per your script, was able to boot, chose the language and wiped, and once in the phone rebooted into the bootloader. But similar to before, I run # fastboot boot twrp-3.5.2_9-0-fajita.img, but now the phone seems to be stuck on the OnePlus logo with the words Fastboot Mode underneath.

savoyroad said:
Yes, I can get the fastboot menu, but trying to boot from the lineage recovery image would take me straight to the warning page indicating the device is unlocked and to not store confidential data.
I just tried using the guide you posted to go with TWRP, but I'm having issues again with booting the recovery. Followed every step: downloaded the ROMs, flashed them all to the phone as per your script, was able to boot, chose the language and wiped, and once in the phone rebooted into the bootloader. But similar to before, I run # fastboot boot twrp-3.5.2_9-0-fajita.img, but now the phone seems to be stuck on the OnePlus logo with the words Fastboot Mode underneath.
Click to expand...
Click to collapse
You may need to start over. I the unfortunate part here is the TMobile 6T is a bit different and complicates things. Recent TMobile MSM Tools have been posted in the TMobile thread, they just aren't in the OP. I'll be honest I don't follow the TMobile devices, so I don't know much about what's best to use between versions and international tools and what not. There are a few TMobile users that posted in my Guide thread that you may want to tag and see if they can help?

Related

Problem rooting Nexus 4 on Mac OS X

I am wanting to root my old Nexus 4 because you can apparently use a USB OTG cable with it once it's rooted? I can't seem to get the damn thing rooted though!
I've been following this tutorial, as the second video is specifically for Mac users.
I've managed to unlock my boot loader, and then try to flash CWM, but whenever i reset my phone, it doesn't boot into CWM, just the normal boot screen. I've followed the video step by step and tried it multiple times, with no success.
I've also tried using these one-click methods (the One-Click ClockworkMod Recovery Toolkit version), and I can boot into CWM recovery, but then whenever I restart my phone, I loose the CWM recovery,
Can anybody help me try to root my Nexus 4 on Mac OS X. I don't mind not rooting if there is another way USB OTG can be used with the Nexus 4?
Ysh232 said:
I am wanting to root my old Nexus 4 because you can apparently use a USB OTG cable with it once it's rooted? I can't seem to get the damn thing rooted though!
I've been following this tutorial, as the second video is specifically for Mac users.
I've managed to unlock my boot loader, and then try to flash CWM, but whenever i reset my phone, it doesn't boot into CWM, just the normal boot screen. I've followed the video step by step and tried it multiple times, with no success.
I've also tried using these one-click methods (the One-Click ClockworkMod Recovery Toolkit version), and I can boot into CWM recovery, but then whenever I restart my phone, I loose the CWM recovery,
Can anybody help me try to root my Nexus 4 on Mac OS X. I don't mind not rooting if there is another way USB OTG can be used with the Nexus 4?
Click to expand...
Click to collapse
Use TWRP 3.0.0, it's up to date and supported still. The flashing process is the same as CWM: ./fastboot flash recovery twrp-3.0.0-0-mako.img Also, to boot into recovery, power off your phone and hold Volume Down+Power and it will boot into the bootloader, then use the volume buttons to select recovery and power button to boot it into recovery. I use OS X so if you need any help just quote me and I'll try to help out
Edit
If you have ADB downloaded as well in the same directory of Fastboot, you can enable USB Debugging under developer options in Settings on your N4. Type /.adb reboot recovery in Terminal whenever you want to boot into recovery, without having to do the above process that I mentioned.
After flashing recovery, boot directly into recovery after flashing using the volume and power button. Do not reboot the phone before booting into the new recovery. Also, there is no need to power off the phone before booting the new recovery for the first time.
fireball0093 said:
Use TWRP it's up to date and supported still. The flashing process is the same as CWM: ./fastboot flash recovery twrp-3.0.0-0-mako.img Also, to boot into recovery, power off your phone and hold Volume Down+Power and it will boot into the bootloader, then use the volume buttons to select recovery and power button to boot it into recovery. I use OS X so if you need any help just quote me and I'll try to help out
Edit
If you have ADB downloaded as well in the same directory of Fastboot, you can enable USB Debugging under developer options in Settings on your N4. Type /.adb reboot recovery in Terminal whenever you want to boot into recovery, without having to do the above process that I mentioned.
Click to expand...
Click to collapse
Thanks for the advice. I downloaded TWRP and booted into recovery. I then entered the following into the terminal:
Code:
A-MacBook-Pro:RootNexus4 A$ ./fastboot-mac flash recovery twrp-3.0.0-0-mako.img
sending 'recovery' (9122 KB)...
OKAY [ 0.292s]
writing 'recovery'...
OKAY [ 0.475s]
finished. total time: 0.767s
I then changed the setting on my N4 from 'Start', to 'Recovery Mode' and pressed the power button. It seems to have booted into TWRP correctly. I then chose to restart phone as normal and got the infinite boot sequence of coloured balls swooping in-between each other...
I'm confused whats going on here...
Ysh232 said:
Thanks for the advice. I downloaded TWRP and booted into recovery. I then entered the following into the terminal:
Code:
A-MacBook-Pro:RootNexus4 A$ ./fastboot-mac flash recovery twrp-3.0.0-0-mako.img
sending 'recovery' (9122 KB)...
OKAY [ 0.292s]
writing 'recovery'...
OKAY [ 0.475s]
finished. total time: 0.767s
I then changed the setting on my N4 from 'Start', to 'Recovery Mode' and pressed the power button. It seems to have booted into TWRP correctly. I then chose to restart phone as normal and got the infinite boot sequence of coloured balls swooping in-between each other...
I'm confused whats going on here...
Click to expand...
Click to collapse
I've now tried to Reboot (through TWRP, and clicked Bootloader, but TWRP says there is no OS installed. Thats probably why I get the infinite boot loop? How can I re-install the OS? I've downloaded the factory image from Google, but can't flash it...
You can manually flash each partition to the phone using fastboot commands. This will restore the phone back to stock.
Once the phone is able to boot the stock rom, reinstall twrp, boot into twrp, and flash supersu.

Hard/soft brick

I think I messed up my PH-1 something royally.
All I was trying to do is unlock my bootloader and load Magisk.
To preface this, my PH-1 seemed to act a little wonky from the get-go. I bought it 3rd person from a guy on craigslist so anything warranty involved I think I'm out of luck.
The phone would take a while to power on, it took something like 10secs on the power button just to turn it on. And if I set it to reboot , it boots into the bootloader. Also, I was never able to access the recovery (even using power + up). It always felt like I had to hold the buttons for way to long to get to its destination; e.g. up and power to get into fastboot.
Ok where I'm at now. In can occasionally get into fastboot mostly after it bootlooping a few times. It won't get past the Essential logo if I try to boot it up.
PS I was able to unlock the bootloader.
Steps I took to remedy this:
> erase all user data in fastboot
> hold power + u + d to hard power off
> follow this guide https://forum.xda-developers.com/essential-phone/how-to/guide-rooting-essential-ph-1-magisk-t3701976
> attempt to install stock system image via flash-all
>a ton other
Here are the results of that.
https://imgur.com/a/iVwwS
Help me guys please. :crying:
A little progress, I was unable to unlock_critical but its still hanging here
https://imgur.com/a/IdZum
jAm-0 said:
I think I messed up my PH-1 something royally.
All I was trying to do is unlock my bootloader and load Magisk.
To preface this, my PH-1 seemed to act a little wonky from the get-go. I bought it 3rd person from a guy on craigslist so anything warranty involved I think I'm out of luck.
The phone would take a while to power on, it took something like 10secs on the power button just to turn it on. And if I set it to reboot , it boots into the bootloader. Also, I was never able to access the recovery (even using power + up). It always felt like I had to hold the buttons for way to long to get to its destination; e.g. up and power to get into fastboot.
Ok where I'm at now. In can occasionally get into fastboot mostly after it bootlooping a few times. It won't get past the Essential logo if I try to boot it up.
PS I was able to unlock the bootloader.
Steps I took to remedy this:
> erase all user data in fastboot
> hold power + u + d to hard power off
> follow this guide https://forum.xda-developers.com/essential-phone/how-to/guide-rooting-essential-ph-1-magisk-t3701976
> attempt to install stock system image via flash-all
>a ton other
Here are the results of that.
https://imgur.com/a/iVwwS
Help me guys please. :crying:
Click to expand...
Click to collapse
read through this and follow the steps should be good to go.
https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681
This is also very helpful
https://mata.readthedocs.io/en/latest/
That's the exact process I was going through, and it finally booted up.
The issue I was having was a bad usb connection which wouldn't allow me to unlock_critical.
SOLVED. Still no Magisk, we'll worry about that another time. 5hrs of troubleshooting is enough for one night.
https://imgur.com/a/ZiBzp
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed
jAm-0 said:
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed
Click to expand...
Click to collapse
You have to flash magisk in twrp recovery NOT bootloader mode.
It's right in the OP from the rooting guide you followed:
Do not set up a password if you are on 8.1 twrp doesn't work.
You need to read through that rooting guide and make sure you know what you're doing before you try.
This phone is easy to hard brick and there is no solution to recover from that.
OREO 8.0/8.1
REQUIREMENTS:
An unlocked bootloader.
A working ADB/Fastboot environment on your computer. Knowledge on how ADB and Fastboot works is also preferred.
The stock boot image for whatever build you're running/trying to root.
The latest TWRP build for our device.
If on 8.1, remove your pin/pattern/passcode until the root process is done.
1. Download both the stock boot image for whatever build you're running and the Magisk or SuperSU zip. Transfer both files to your device's internal storage.
2. Reboot your phone into the bootloader, then open up your command prompt or terminal and flash the latest TWRP build for the device using:
Code:
fastboot flash boot twrp.img
3. Once TWRP has finished flashing, reboot into your recovery. When prompted, enter your pattern/passcode/password to decrypt your data in order to gain access to your internal storage.
4. Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.
5. Whenever Magisk/SuperSU finishes installing, simply reboot your device! You should now be rooted.
*NOTE: TWRP will NOT remain installed on your device.
wolfu11 said:
You have to flash magisk in twrp recovery NOT bootloader mode.
It's right in the OP from the rooting guide you followed:
Do not set up a password if you are on 8.1 twrp doesn't work.
You need to read through that rooting guide and make sure you know what you're doing before you try.
This phone is easy to hard brick and there is no solution to recover from that.
OREO 8.0/8.1
REQUIREMENTS:
An unlocked bootloader.
A working ADB/Fastboot environment on your computer. Knowledge on how ADB and Fastboot works is also preferred.
The stock boot image for whatever build you're running/trying to root.
The latest TWRP build for our device.
If on 8.1, remove your pin/pattern/passcode until the root process is done.
1. Download both the stock boot image for whatever build you're running and the Magisk or SuperSU zip. Transfer both files to your device's internal storage.
2. Reboot your phone into the bootloader, then open up your command prompt or terminal and flash the latest TWRP build for the device using:
Code:
fastboot flash boot twrp.img
3. Once TWRP has finished flashing, reboot into your recovery. When prompted, enter your pattern/passcode/password to decrypt your data in order to gain access to your internal storage.
4. Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.
5. Whenever Magisk/SuperSU finishes installing, simply reboot your device! You should now be rooted.
*NOTE: TWRP will NOT remain installed on your device.
Click to expand...
Click to collapse
I realize all that, the issue is I cannot access any sort of recovery because I think my bootloader is defective.
For example from a cold restart if I press the power button for say 3 -5 seconds it wont boot, just boot to the Essential logo and loop. To get the phone to boot I have to hold the power down for 15-20 seconds while it bootloops a couple times then it'll boot.
Is there a possible way to reflash the bootloader software if it is defective? It's unlocked btw
There is a way to install magisk via fastboot with a patched_boot img which I'm working on. Cant seem to find the right boot img to patch for 8.1
PS Is it possible to flash .zips through fastboot? e.g. custom roms etc
Was finally able to get into recovery, so all is well. Thanks for the help yall
OP, what was your process to successfully get into recovery and fix your problems?
It may help others sometime?
gimpy1 said:
OP, what was your process to successfully get into recovery and fix your problems?
It may help others sometime?
Click to expand...
Click to collapse
It's really hard to say, my phone has a serious problem with it. sometimes I cant get it to boot, it will boot into the bootloader over and over and over. I've managed to get Lineage 15.1 on if for a bit until I tried to get back into the recovery which sent it manic.
I just got lucky I was able to get into TWRP and flash lineage.
my first issue not being able to flash the stock image via fastboot because I didn't unlock_critical which can sometimes fail when the usb connection is bad.
Currently flashing stock again if my phone will boot up. I'm not sure whats wrong with my bootloader but its causing a ton of havoc
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
katastyle971 said:
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
Click to expand...
Click to collapse
Same boat for me - just keep rebooting to show Powered by Android Screen and then reboot again and again. Was able to see my device using fastboot devices command but all attempts to access recory just repeat the bootloop entry. I would happily check the OEM UNLOCK option in dev settings but can't even get it to book to any OS to make that option happen. Still shows bootloader locked on bootloader screen - any help someone can suggest?
I had this problem tonight also. In my case I suspect it had to do with the install of magisk in which I checked both boxes and patched the bootloader. on reboot I was stuck on boot. Just wanted to add my solution. I got the pie back to stock zip here https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681 then I put it into the adb folder and ran the flashall.bat script. I tried the no wipe one and it saved my information. very happy I didnt have to resetup my phone in the end.
katastyle971 said:
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
Click to expand...
Click to collapse
I am in the same boat. I tried to re-install the OS, but because my USB debugging was not enabled, Fastboot worked but ADB would not and since I basically wiped the recovery area, my phone will only boot into Fastboot but will not allow any loading of recovery. I would pay for someone to help. This is so hard to figure out. I have contacted Essential but since my phone is over 12 months old, the warranty has expired.
Help please. It seems like such a waste to have a bricked phone.

phone bricked? help!

I decided to update my old oneplus 2 to lineageos 15.1 with, but when I tried to flash the file with TWRP, it shows an error. Since the TWRP version I was using was old, I decided to update it first. Keep in mind at this point i had completely wiped my device. So, I downloaded the "twrp-3.2.1-0-kenzo.img" file, as per a youtube video where the dude managed to flash the update successfully, and gave it a go. It showed up as successful. Then i shut the whole device off, and tried to boot back in to recovery to flash the ROM again, but the thing won't boot. It's stuck on this boot screen (with the oneplus logo and 'powered by android' at the bottom), and refuses to go further. I'm stuck in a situation with the phone having no OS, no recovery and the thing won't show up when I connect it to the pc either. Well, the pc makes the 'device connected' notification sound when I plug it in, but nothing shows up on the file explorer or the device manager.
That's my dilemma, please i need help!
Thanks in advance.
inwarse said:
I decided to update my old oneplus 2 to lineageos 15.1 with, but when I tried to flash the file with TWRP, it shows an error. Since the TWRP version I was using was old, I decided to update it first. Keep in mind at this point i had completely wiped my device. So, I downloaded the "twrp-3.2.1-0-kenzo.img" file, as per a youtube video where the dude managed to flash the update successfully, and gave it a go. It showed up as successful. Then i shut the whole device off, and tried to boot back in to recovery to flash the ROM again, but the thing won't boot. It's stuck on this boot screen (with the oneplus logo and 'powered by android' at the bottom), and refuses to go further. I'm stuck in a situation with the phone having no OS, no recovery and the thing won't show up when I connect it to the pc either. Well, the pc makes the 'device connected' notification sound when I plug it in, but nothing shows up on the file explorer or the device manager.
That's my dilemma, please i need help!
Thanks in advance.
Click to expand...
Click to collapse
You downloaded the KENZO (this is not oneplus2! ) TWRP and flashed it on another phone (oneplus2), just normal that it doesn't work and your phone is messed up.
If you can enter fastboot (vol up and power button to boot) you can rescue your phone:
-enter fastboot (vol up + power, while phone is completely off, u can also hold it until you can see "fastboot" written on the screen)
-connect device to a computer with fastboot installed
-type "fastboot oem unlock" into a terminal/cmd window if there is no error, you are good to go, otherwise your bootloader relocked, use this thread to recover
-if your bootloader is still unlocked, download the ONEPLUS2 TWRP IMG, ALWAYS make sure to only flash the roms, kernels, recoveries or zips for YOUR phone otherwise you can really DESTROY your phone!
-now type into terminal/cmd: "fastboot flash recovery *drag the oneplus2 twrp image into terminal/cmd window* and hit enter
-use vol down + power to reboot phone into recovery and wipe all partitions
-Install a ONEPLUS2 ROM of your choice
If something is not clear, use google, because this is most likely basic stuff you have to know when flashing your phone
I can in fact go to fastboot mode by holding the power+volume up keys. When I the phone to my pc it does show a fastboot device (9597b869 fastboot). What do i do from here?
inwarse said:
I can in fact go to fastboot mode by holding the power+volume up keys. When I the phone to my pc it does show a fastboot device (9597b869 fastboot). What do i do from here?
Click to expand...
Click to collapse
As I wrote above (it's a step-by-step guide, u only have to READ )
-connect device to a computer with fastboot installed
-type "fastboot oem unlock" into a terminal/cmd window if there is no error, you are good to go, otherwise your bootloader relocked, use this thread to recover
-if your bootloader is still unlocked, download the ONEPLUS2 TWRP IMG, ALWAYS make sure to only flash the roms, kernels, recoveries or zips for YOUR phone otherwise you can really DESTROY your phone!
-now type into terminal/cmd: "fastboot flash recovery *drag the oneplus2 twrp image into terminal/cmd window* and hit enter
-use vol down + power to reboot phone into recovery and wipe all partitions
-Install a ONEPLUS2 ROM of your choice
wertus33333 said:
As I wrote above (it's a step-by-step guide, u only have to READ )
-connect device to a computer with fastboot installed
-type "fastboot oem unlock" into a terminal/cmd window if there is no error, you are good to go, otherwise your bootloader relocked, use this thread to recover
-if your bootloader is still unlocked, download the ONEPLUS2 TWRP IMG, ALWAYS make sure to only flash the roms, kernels, recoveries or zips for YOUR phone otherwise you can really DESTROY your phone!
-now type into terminal/cmd: "fastboot flash recovery *drag the oneplus2 twrp image into terminal/cmd window* and hit enter
-use vol down + power to reboot phone into recovery and wipe all partitions
-Install a ONEPLUS2 ROM of your choice
Click to expand...
Click to collapse
i tried to follow the guide. but the bootloader, as per you description is relocked. the download link for the driver you provided shows up as empty/no longer available. that's where i'm getting stuck.
P.S, i can enter fastboot mode on the phone via power+volume up.
thanks for the help so far, i can't seem to find much help other than from you so far
Oh, the link is dead, sry for that. try this one (GDrive links are up and working).
inwarse said:
i tried to follow the guide. but the bootloader, as per you description is relocked. the download link for the driver you provided shows up as empty/no longer available. that's where i'm getting stuck.
P.S, i can enter fastboot mode on the phone via power+volume up.
thanks for the help so far, i can't seem to find much help other than from you so far
Click to expand...
Click to collapse
so i managed to get into qualcomm mode, updated the drivers, and ran "MSM8994DownloadTool.exe" in administrator mode. it went as it's outlined in your guide. however, at the end of that process, the phone got stuck in a bootloop (the oneplus logo flashes for a moment and restarts). and can't get into qualcomm mode now, since when i connect the usb to the pc while the phone off, it lights the display (to show that it's charging, i think). any way back from this?
(i can still get into fastboot mode)
inwarse said:
so i managed to get into qualcomm mode, updated the drivers, and ran "MSM8994DownloadTool.exe" in administrator mode. it went as it's outlined in your guide. however, at the end of that process, the phone got stuck in a bootloop (the oneplus logo flashes for a moment and restarts). and can't get into qualcomm mode now, since when i connect the usb to the pc while the phone off, it lights the display (to show that it's charging, i think). any way back from this?
(i can still get into fastboot mode)
Click to expand...
Click to collapse
Do you still have TWRP? If yes go to TWRP and shut down the phone there, afterwards you should be able to enter qualcomm mode again.
otherwise you have to try (i think 10s power button will shut the device completely down). You should be able to enter qualcomm mode if the device is fully shut off (your scenario sounds as if the device is not fully shut off when u connect it to the pc).
Just to go sure: You are absolutely sure to have a oneplus2, are you?
inwarse said:
so i managed to get into qualcomm mode, updated the drivers, and ran "MSM8994DownloadTool.exe" in administrator mode. it went as it's outlined in your guide. however, at the end of that process, the phone got stuck in a bootloop (the oneplus logo flashes for a moment and restarts). and can't get into qualcomm mode now, since when i connect the usb to the pc while the phone off, it lights the display (to show that it's charging, i think). any way back from this?
(i can still get into fastboot mode)
Click to expand...
Click to collapse
Could you resolve the issue?
wertus33333 said:
Could you resolve the issue?
Click to expand...
Click to collapse
nope. kept running into issue after issue, so got dejected and gave up.

[SOLVED]Tried to update Magisk from app, stuck at Fastboot screen, TWRP may be gone

I fixed the problem by just booting into the LG Factory Reset menu, in order to get into TWRP. I hesitated to do that for a while because I had no way to verify TWRP was still on my device. After running out of options, I decided to just go for it. To my (and probably no one elses) surprise, it went straight into TWRP, where I was able to flash H91820s and Magisk 16.0 in the same TWRP session. Rebooted, everything was how it was except on a new version of Android. Root was retained.
Tried to update Magisk on my TMobile H918 from Magisk version 16.x using the app, and selected Direct Installation. The device is now stuck at the fastboot screen, and I cannot boot into recovery from adb.
Is there a way I can repair things? I am unsure exactly what got deleted/corrupted in the process of the update.
EDIT: When I try to boot into TWRP, I get this error:
fastboot: error: cannot load 'recovery': No such file or directory
Click to expand...
Click to collapse
and when I try to re-flash TWRP, I get this error:
fastboot flash recovery twrp.img
Sending 'recovery' (28928 KB) OKAY [ 0.764s]
Writing 'recovery' FAILED (remote: 'unknown command')
Finished. Total time: 0.827s
Click to expand...
Click to collapse
Can you get in Twrp with button combo? For me its while boot hold vol down and power then at lg logo release the power for a sec and re hold until the while screen and then select yes twice.
There is also download mode and reflashing twrp that way I believe...
Dont 100% me on that .
Mysticblaze347 said:
Can you get in Twrp with button combo? For me its while boot hold vol down and power then at lg logo release the power for a sec and re hold until the while screen and then select yes twice.
There is also download mode and reflashing twrp that way I believe...
Dont 100% me on that .
Click to expand...
Click to collapse
I tried to boot into recovery, but adb detected no recoveries on the system.
I don't want to do the System Format Yes Twice thing because I believe TWRP is gone. And I am unable to re-flash due to "no such command."
The recovery is unable to be written to the device.
124112 said:
I tried to boot into recovery, but adb detected no recoveries on the system.
I don't want to do the System Format Yes Twice thing because I believe TWRP is gone. And I am unable to re-flash due to "no such command."
The recovery is unable to be written to the device.
Click to expand...
Click to collapse
Is the phone in download mode ?
adb doesn't work in download mode
What does the command fastboot devices return?
Sent from my PH-1 using Tapatalk
Mysticblaze347 said:
Can you get in Twrp with button combo? For me its while boot hold vol down and power then at lg logo release the power for a sec and re hold until the while screen and then select yes twice.
There is also download mode and reflashing twrp that way I believe...
Dont 100% me on that .
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Click to collapse
clsA said:
Is the phone in download mode ?
adb doesn't work in download mode
What does the command fastboot devices return?
Sent from my PH-1 using Tapatalk
Click to expand...
Click to collapse
I fixed the problem by just booting into the LG Factory Reset menu, in order to get into TWRP. I hesitated to do that for a while because I had no way to verify TWRP was still on my device. After running out of options, I decided to just go for it. To my (and probably no one elses) surprise, it went straight into TWRP, where I was able to flash H91820s and Magisk 16.0 in the same TWRP session. Rebooted, everything was how it was except on a new version of Android. Root was retained.
124112 said:
I fixed the problem by just booting into the LG Factory Reset menu, in order to get into TWRP. I hesitated to do that for a while because I had no way to verify TWRP was still on my device. After running out of options, I decided to just go for it. To my (and probably no one elses) surprise, it went straight into TWRP, where I was able to flash H91820s and Magisk 16.0 in the same TWRP session. Rebooted, everything was how it was except on a new version of Android. Root was retained.
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Glad it worked...happy new year

Got my phone stuck in unlocked bootloader

***SOLVED***
so after installing everything following a guide, where as i couldn't open app store after i was done. i decided to uninstall everything and it went great until i restarted my phone after doing so, now i can't exit bootloader and i can only turn my phone off when it's not plugged in, anything returns to bootloader. I have tried several things here to fix it, nothing works as it doesn't show up in the adb commands.
please help me figure anything out
EDIT: I think the issue is that i deleted the cache and then proceeded to reboot my device
EDIT2: and i just locked the oem lovely
EDIT3: i did it
So you are stuck on the fastboot screen? ADB doesnt work on the fastboot screen, only fastboot commands. Careful what guides you follow, and make sure you don't miss any steps. From the fastboot screen you could use the fastboot ROM.
If that doesn't work you can use the MSM tool.
Remember the fastboot ROM will put OOS back on your phone. MSM will put OOS back on your phone and relock the bootloader. So not sure what you were trying to do but you may try and boot TWRP from fastboot one more time if thats what you were trying to do.
OhioYJ said:
So you are stuck on the fastboot screen? ADB doesnt work on the fastboot screen, only fastboot commands. Careful what guides you follow, and make sure you don't miss any steps. From the fastboot screen you could use the fastboot ROM.
If that doesn't work you can use the MSM tool.
Remember the fastboot ROM will put OOS back on your phone. MSM will put OOS back on your phone and relock the bootloader. So not sure what you were trying to do but you may try and boot TWRP from fastboot one more time if thats what you were trying to do.
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Click to collapse
when ever i try to boot the immage it says "PS C:\adb> fastboot boot twrp-3.4.0-0-fajita-Q-mauronofrio.img
downloading 'boot.img'...
OKAY [ 0.723s]
booting...
FAILED (remote: Failed to load/authenticate boot image: Load Error)
finished. total time: 0.731s"
but i'll try to use the MSM tool
EDIT: doesn't seem to work either, same issue "Load Error"
The error means something is wrong, likely just one partition, but Ive never taken the time to figure out which one, just always fixed it with the fastboot ROM. I will say Im not a fan of the 3.4.x TWRP (for this device), I removed it from my LOS guide for several reasons. It still has issues in my opinion.
For the MSM tool, if it doesnt work its almost always a driver issue. Just for clarification for the MSM tool its not supposed to be in fastboot, nothing will be on the screen while using the tool (the phone starts off).
For reference, taken from my guide here:
Volume Up + Power while turning on will boot to fastboot.
Volume Down + Power while turn on will boot to recovery.
Holding Volume Up + Power should force the phone to turn off.
Volume Up + Volume Down should put your phone in Download mode for the MSM Tool.
OhioYJ said:
The error means something is wrong, likely just one partition, but Ive never taken the time to figure out which one, just always fixed it with the fastboot ROM. I will say Im not a fan of the 3.4.x TWRP (for this device), I removed it from my LOS guide for several reasons. It still has issues in my opinion.
For the MSM tool, if it doesnt work its almost always a driver issue. Just for clarification for the MSM tool its not supposed to be in fastboot, nothing will be on the screen while using the tool (the phone starts off).
For reference, taken from my guide here:
Volume Up + Power while turning on will boot to fastboot.
Volume Down + Power while turn on will boot to recovery.
Holding Volume Up + Power should force the phone to turn off.
Volume Up + Volume Down should put your phone in Download mode for the MSM Tool.
Click to expand...
Click to collapse
so i have successfully done the msm, but from here how do i enter stock os, because when ever i try to search for updates it says none found even though i am 9, is it because my oem is unlocked? or am i still rooted? whenever i try to update it using local upgrade it says fail
edit: just read that i should try to update to 9.0.17 and then to latest
OhioYJ said:
The error means something is wrong, likely just one partition, but Ive never taken the time to figure out which one, just always fixed it with the fastboot ROM. I will say Im not a fan of the 3.4.x TWRP (for this device), I removed it from my LOS guide for several reasons. It still has issues in my opinion.
For the MSM tool, if it doesnt work its almost always a driver issue. Just for clarification for the MSM tool its not supposed to be in fastboot, nothing will be on the screen while using the tool (the phone starts off).
For reference, taken from my guide here:
Volume Up + Power while turning on will boot to fastboot.
Volume Down + Power while turn on will boot to recovery.
Holding Volume Up + Power should force the phone to turn off.
Volume Up + Volume Down should put your phone in Download mode for the MSM Tool.
Click to expand...
Click to collapse
Heya, you sound really experience with regards to this so I was hoping you could save me some time by telling me if I should even bother wasting trying to revive my brick.
I've got a op7pro stuck on the bootloader unlocked screen. Research reveals I hosed it by flashing twrp to the wrong partition. Flashed it to boot instead of recovery.
I've tried to get MSMTool to recognize it by pressing volume buttons on powerup but it hasn't so far. That's pretty much the last resort isn't it? If MSM won't recognize it then I'm outta luck?
Device Manager will see my phone as an unknown device when I boot holding down the volume buttons, but MSMTool and the all-in-one tool won't.
The other time I unbricked using MSMTool I got it to work pressing volume buttons on boot and win10 immediately recognized the device as highspeed qualcomm ports.
But that was on a boot loop, this is stuck on bootloader, a far graver problem it seems. Thanks for whatever advice you could offer this hapless modder.

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