READ THIS WHOLE THING BEFORE STARTING. THERE ARE SEVERAL WARNINGS.
Flash eu firmware using msmtool mod (https://www.xda-developers.com/t-mobile-oneplus-8t-rebrand-without-bootloader-unlocking/) (if msmtool doesn’t work make sure windows is in test mode with proper qualcomm drivers) (if your device bootloops and you can’t recover it just flash it again with msmtool, power it off and power it back on holding both volume up and down) Recommended to use Command Prompt commands instead of powershell (type cmd in platform-tools directory) https://developer.android.com/studio/releases/platform-tools
Unlock oem bootloader
Enable developer options (click build number several times)(make sure you’re connected to internet)
Enable oem unlocking, advanced reboot, usb debugging
Reboot to bootloader/fastboot
fastboot oem unlock
Unlock bootloader
Boot back into oos, (repeat steps I. ii. And iii.) or (boot directly into fastboot by holding volume down while
booting)
Flash boot, dtbo, and recovery (https://mirror.math.princeton.edu/pub/lineageos/full/kebab/20220818/)
fastboot flash boot (path to boot.img)
fastboot flash dtbo (path to dtbo.img)
fastboot flash recovery (path to recovery.img)
Download firmware (https://kremowka.xyz/files/8fw/)
Enter recovery mode, enter fastbootd
Advanced > enter fastboot
Follow https://wiki.lineageos.org/devices/kebab/fw_update to flash it, and without rebooting sideload
LineageOS 19.1, sideload mindthegapps, then reboot. https://wiki.lineageos.org/devices/kebab/install fits in
there somewhere
Open notepad, copy commands from lineage, save as (file name).bat, drag into powershell from file explorer
(flash ram separately for safety) I named mine “flashfirmwareforoneplus8t.bat”
Be careful with ddr4 vs 5. do not brick your phone. Ddr4x is ddr4 for these purposes.
Without rebooting, enter recovery > apply update > apply from adb (it should say version 18.1 in the top left)
adb devices (to confirm phone is connected properly and device drivers are configured properly)
adb sideload (path to lineage 19.1 .zip)
Sideload will likely get stuck at 47%. This is normal. Just wait.
Volume up to go to back arrow, advanced, reboot to recovery (make sure it says version 19.1 now)
adb sideload (path to mindthegapps .zip) note that most gapps packages will not install properly as they are
too large. Just download them all from google play store once booted.
Signature verification failed will pop up, just confirm “yes”
Reboot recovery?
adb sideload (path to copy partitions .zip)
Back > Reboot system now
It may say “can’t load android system your data may be corrupt” just factory data reset it’s fine unless you have
data you want to keep then you’ll have to google it, I don’t know how to recover that and you should’ve done
that before this step (do it in fastboot, search up adb shell pull)
If the start page has clouds and blue then good job you loaded gapps properly. If it’s not then something
happened.
OPTIONAL (if you want magisk/root)
Go into settings, enable developer options (tap build number repeatedly) make sure usb debugging is on
Search in settings for “advanced”, click “advanced restart” and enable
Hold power button, restart, recovery
Apply update > apply from adb
adb devices
adb sideload (path to magisk .apk)
Signature verification failed, install anyway
Volume up to go to back arrow, reboot system now
Boot into device, reboot, magisk should appear, click on it and click accept on whatever it prompts
Open magisk, do whatever it prompts. To install a file, drag whatever module .zip you want in, make sure file
transfer is on
DO NOT USE ACC OR ACCA (battery manager) FROM F-DROID IT SOFT BRICKED MY PHONE
What I use: Safetynet universal fix and raven.A12L (spoofs as pixel 6 pro to let safetynet work)
Install from storage
Order I did it in was safetynet then raven, rebooting between each one but I'm not sure if it matters
Install safetynetfix, then go into settings, click zygisk, click enforce denylist, click 3 dots, show system apps, click
google play services, google play store, and carrier services (the square check box next to the name, make sure
every check below when you open it as a dropdown menu is checked
Reboot phone
Now you can download whatever you want
If you install twrp, make sure you are using android 12 version and not android 11, android 11 twrp will destroy
your recovery if you try to use it on android 12.
Add on: If your phone is not detected by your pc, or is detected as “MTP” with an exclamation mark, you do not
have the right drivers. There are plenty of resources online to fix this, but one that I had trouble with was that I
was on windows 10 N instead of whatever the other version is, which doesn’t come with “mediafeaturepack.”
You need to install that on your own from https://www.microsoft.com/en-us/software
download/mediafeaturepack, or, if your device isn’t listed, go to windows application “optional features” and
add it from there.
If your computer won’t download qdloader 9008 qualcomm drivers through device manager, there are a few
things i’ve tried to fix it. Make sure you have correct drivers
from https://www.catalog.update.microsoft.com/Search.aspx?q=qualcomm hs usb 9008
“The system cannot find the file specified”
Open command prompt as administrator
Type DISM /Online /Add-Package /PackagePath:"Full path of .cab file"
I put mine in C: drive folder but I'm not sure it matters
Also I'm not sure which one of the three I downloaded from the website. Did not cause any issue downloading
and trying to install all three, let me know if you figure out which one works. Maybe you need all three, I don’t
know.
If that doesn’t work, do sfc /scannow
Open windows update, make sure all updates are applied and restart windows (make sure you go to optional
updates and select qualcomm drivers)
Fastboot won’t connect
Make sure you’re using a usb 2.0 port instead of a usb 3.0 port, and make sure your usb cable is a data cable.
Google the difference if you don’t know what it is. Download usb drivers
from https://developer.android.com/studio/run/win-usb, open device manager, see if anything is there, if it
shows something in “other devices” click on it, click update drivers, browse my computer, let me pick, have disk,
and then browse to android_winusb.inf and click update, click bootloader interface. If you get “error 10 device
won’t start” when installing bootloader interface, one possible solution is to disable driver signing.
Open command prompt as an administrator (doesn’t have to be in platform tools directory)
bcedit /set testsigning on
Reboot, try to install driver again.
If your device is bootlooping, and you enter fastboot after updating to a12 firmware AND you have magisk\
modules downloaded AND you have twrp installed, do not press the up volume button, only cycle through
options with volume down, because it may enter an option cycle and you won’t be able to do anything unless
you fastboot flash boot twrp.img.
It’s recommended that as soon as you root, you backup persist.img, which contains imei info (you don’t want
that to get destroyed) I am unsure if there’s anything else device specific you need to backup, I've heard
vendor_image may be but it’d not as important as persist.
To backup persist.img, put phone in recovery, type in command prompt or powershell
adb shell dd if=/dev/block/bootdevice/by-name/persist of=/tmp/persist.img
adb pull /tmp/persist.img persist.img
This should save persist.img to your computer. Back it up somewhere you keep important things. Also don’t
give it out at random as it contains your imei number, not sure what the consequences of that could be but
nothing good is likely to come of it.
Important shortcuts:
Power + vol up – boot into system
Power + vol down – boot into fastboot
Power + vol up + vol down – boot into edl
IF DEVICE IS BOOTLOOPING AND YOU CAN’T ENTER ANY DIFFERENT MODES, CONTINUE HOLDING POWER +
VOL DOWN IN RANDOM PATTERNS. IT HAS TAKEN ME 20 MINUTES OF RANDOM BUTTON COMBINATIONS TO
GET INTO FASTBOOT FROM A BOOTLOOP. YOU WILL ALWAYS BE ABLE TO EXIT A BOOTLOOP IF YOUR PHONE
IS PHYSICALLY UNDAMAGED.
If VoWifi doesn’t work, pixelify dialer can get it working. Probably also just any custom dialer, but I like Google
dialer. Wait for the interface to change slightly, don’t clear data until you’ve waited at least a minute or two and
closed and reopened it a few times, but if it doesn’t change after installing pixelify then force close, clear data,
and wait a minute or two, reopen, and then wait. If it continuously doesn’t change you can reflash pixelify.
Note – If using pixelify module, disable auto update for android system intelligence, it will break gboard
translate and possibly slow down device.
You can also use magisk module “mindetach” to detach com.google.android.as from play store, which will fix
any auto update bugs. Credit to vewu for showing me that
https://github.com/j-hc/mindetach-magisk
https://github.com/Pixel-Props/raven/releases
https://github.com/kdrag0n/safetynet-fix
Dm me on here if you have any questions. I am not a dev, I learned these steps from others in the community.
Shoutout pizzalovingnerd, Luk1337, raven, poang, and nvcore for helping me out a lot.
Apologies for formatting, this is copied from a word doc. Please feel free to indent and number list yourself and
send me a better version
Flash eu firmware using msmtool mod (https://www.xda-developers.com/t-mobile-oneplus-8t-rebrand-without-bootloader-unlocking/) (if msmtool doesn’t work make sure windows is in test mode with proper qualcomm drivers) (if your device bootloops and you can’t recover it just flash it again with msmtool, power it off and power it back on holding both volume up and down) Recommended to use Command Prompt commands instead of powershell (type cmd in platform-tools directory) https://developer.android.com/studio/releases/platform-tools
Unlock oem bootloader
Enable developer options (click build number several times)(make sure you’re connected to internet)
Enable oem unlocking, advanced reboot, usb debugging
Reboot to bootloader/fastboot
fastboot oem unlock
Unlock bootloader
Boot back into oos, (repeat steps I. ii. And iii.) or (boot directly into fastboot by holding volume down while
booting)
Flash boot, dtbo, and recovery (https://mirror.math.princeton.edu/pub/lineageos/full/kebab/20220818/)
fastboot flash boot (path to boot.img)
fastboot flash dtbo (path to dtbo.img)
fastboot flash recovery (path to recovery.img)
Download firmware (https://kremowka.xyz/files/8fw/)
Enter recovery mode, enter fastbootd
Advanced > enter fastboot
Follow https://wiki.lineageos.org/devices/kebab/fw_update to flash it, and without rebooting sideload
LineageOS 19.1, sideload mindthegapps, then reboot. https://wiki.lineageos.org/devices/kebab/install fits in
there somewhere
Open notepad, copy commands from lineage, save as (file name).bat, drag into powershell from file explorer
(flash ram separately for safety) I named mine “flashfirmwareforoneplus8t.bat”
Be careful with ddr4 vs 5. do not brick your phone. Ddr4x is ddr4 for these purposes.
Without rebooting, enter recovery > apply update > apply from adb (it should say version 18.1 in the top left)
adb devices (to confirm phone is connected properly and device drivers are configured properly)
adb sideload (path to lineage 19.1 .zip)
Sideload will likely get stuck at 47%. This is normal. Just wait.
Volume up to go to back arrow, advanced, reboot to recovery (make sure it says version 19.1 now)
adb sideload (path to mindthegapps .zip) note that most gapps packages will not install properly as they are
too large. Just download them all from google play store once booted.
Signature verification failed will pop up, just confirm “yes”
Reboot recovery?
adb sideload (path to copy partitions .zip)
Back > Reboot system now
It may say “can’t load android system your data may be corrupt” just factory data reset it’s fine unless you have
data you want to keep then you’ll have to google it, I don’t know how to recover that and you should’ve done
that before this step (do it in fastboot, search up adb shell pull)
If the start page has clouds and blue then good job you loaded gapps properly. If it’s not then something
happened.
OPTIONAL (if you want magisk/root)
Go into settings, enable developer options (tap build number repeatedly) make sure usb debugging is on
Search in settings for “advanced”, click “advanced restart” and enable
Hold power button, restart, recovery
Apply update > apply from adb
adb devices
adb sideload (path to magisk .apk)
Signature verification failed, install anyway
Volume up to go to back arrow, reboot system now
Boot into device, reboot, magisk should appear, click on it and click accept on whatever it prompts
Open magisk, do whatever it prompts. To install a file, drag whatever module .zip you want in, make sure file
transfer is on
DO NOT USE ACC OR ACCA (battery manager) FROM F-DROID IT SOFT BRICKED MY PHONE
What I use: Safetynet universal fix and raven.A12L (spoofs as pixel 6 pro to let safetynet work)
Install from storage
Order I did it in was safetynet then raven, rebooting between each one but I'm not sure if it matters
Install safetynetfix, then go into settings, click zygisk, click enforce denylist, click 3 dots, show system apps, click
google play services, google play store, and carrier services (the square check box next to the name, make sure
every check below when you open it as a dropdown menu is checked
Reboot phone
Now you can download whatever you want
If you install twrp, make sure you are using android 12 version and not android 11, android 11 twrp will destroy
your recovery if you try to use it on android 12.
Add on: If your phone is not detected by your pc, or is detected as “MTP” with an exclamation mark, you do not
have the right drivers. There are plenty of resources online to fix this, but one that I had trouble with was that I
was on windows 10 N instead of whatever the other version is, which doesn’t come with “mediafeaturepack.”
You need to install that on your own from https://www.microsoft.com/en-us/software
download/mediafeaturepack, or, if your device isn’t listed, go to windows application “optional features” and
add it from there.
If your computer won’t download qdloader 9008 qualcomm drivers through device manager, there are a few
things i’ve tried to fix it. Make sure you have correct drivers
from https://www.catalog.update.microsoft.com/Search.aspx?q=qualcomm hs usb 9008
“The system cannot find the file specified”
Open command prompt as administrator
Type DISM /Online /Add-Package /PackagePath:"Full path of .cab file"
I put mine in C: drive folder but I'm not sure it matters
Also I'm not sure which one of the three I downloaded from the website. Did not cause any issue downloading
and trying to install all three, let me know if you figure out which one works. Maybe you need all three, I don’t
know.
If that doesn’t work, do sfc /scannow
Open windows update, make sure all updates are applied and restart windows (make sure you go to optional
updates and select qualcomm drivers)
Fastboot won’t connect
Make sure you’re using a usb 2.0 port instead of a usb 3.0 port, and make sure your usb cable is a data cable.
Google the difference if you don’t know what it is. Download usb drivers
from https://developer.android.com/studio/run/win-usb, open device manager, see if anything is there, if it
shows something in “other devices” click on it, click update drivers, browse my computer, let me pick, have disk,
and then browse to android_winusb.inf and click update, click bootloader interface. If you get “error 10 device
won’t start” when installing bootloader interface, one possible solution is to disable driver signing.
Open command prompt as an administrator (doesn’t have to be in platform tools directory)
bcedit /set testsigning on
Reboot, try to install driver again.
If your device is bootlooping, and you enter fastboot after updating to a12 firmware AND you have magisk\
modules downloaded AND you have twrp installed, do not press the up volume button, only cycle through
options with volume down, because it may enter an option cycle and you won’t be able to do anything unless
you fastboot flash boot twrp.img.
It’s recommended that as soon as you root, you backup persist.img, which contains imei info (you don’t want
that to get destroyed) I am unsure if there’s anything else device specific you need to backup, I've heard
vendor_image may be but it’d not as important as persist.
To backup persist.img, put phone in recovery, type in command prompt or powershell
adb shell dd if=/dev/block/bootdevice/by-name/persist of=/tmp/persist.img
adb pull /tmp/persist.img persist.img
This should save persist.img to your computer. Back it up somewhere you keep important things. Also don’t
give it out at random as it contains your imei number, not sure what the consequences of that could be but
nothing good is likely to come of it.
Important shortcuts:
Power + vol up – boot into system
Power + vol down – boot into fastboot
Power + vol up + vol down – boot into edl
IF DEVICE IS BOOTLOOPING AND YOU CAN’T ENTER ANY DIFFERENT MODES, CONTINUE HOLDING POWER +
VOL DOWN IN RANDOM PATTERNS. IT HAS TAKEN ME 20 MINUTES OF RANDOM BUTTON COMBINATIONS TO
GET INTO FASTBOOT FROM A BOOTLOOP. YOU WILL ALWAYS BE ABLE TO EXIT A BOOTLOOP IF YOUR PHONE
IS PHYSICALLY UNDAMAGED.
If VoWifi doesn’t work, pixelify dialer can get it working. Probably also just any custom dialer, but I like Google
dialer. Wait for the interface to change slightly, don’t clear data until you’ve waited at least a minute or two and
closed and reopened it a few times, but if it doesn’t change after installing pixelify then force close, clear data,
and wait a minute or two, reopen, and then wait. If it continuously doesn’t change you can reflash pixelify.
Note – If using pixelify module, disable auto update for android system intelligence, it will break gboard
translate and possibly slow down device.
You can also use magisk module “mindetach” to detach com.google.android.as from play store, which will fix
any auto update bugs. Credit to vewu for showing me that
https://github.com/j-hc/mindetach-magisk
https://github.com/Pixel-Props/raven/releases
https://github.com/kdrag0n/safetynet-fix
Dm me on here if you have any questions. I am not a dev, I learned these steps from others in the community.
Shoutout pizzalovingnerd, Luk1337, raven, poang, and nvcore for helping me out a lot.
Apologies for formatting, this is copied from a word doc. Please feel free to indent and number list yourself and
send me a better version
Last edited:
