Database Users

How to update when rooted / custom recovery?

Hi guys, my phone is on oreo firmware 20A twrp and magisk to get root access. Just got a notification that there is an update available (20b).
Now what is the most efficient way to update without losing all my data/settings?

What I did was flash stock 20b kdz (there is no .zip to flash in twrp) and you can do a backup with lg bridge or with google account and then flash twrp, format data (when you flash stock kdz encryption is enabled again), flash all you need, and reboot to system and restore the backup or the google backup. With the google backup you won't need to set up to much.

mprovi_15 said:
What I did was flash stock 20b kdz (there is no .zip to flash in twrp) and you can do a backup with lg bridge or with google account and then flash twrp, format data (when you flash stock kdz encryption is enabled again), flash all you need, and reboot to system and restore the backup or the google backup. With the google backup you won't need to set up to much.
Click to expand...
Click to collapse
I see. But that still involves a factory reset. I've always used Titanium Backup for apps etc. But it's still takes a lot of time... Is google backup any better than that?
What if I flash KDZ 20b with LG UP but as update! And then flash TWRP with fastboot and then immediately flash magisk without formatting data to remove encryption?

clouds5 said:
I see. But that still involves a factory reset. I've always used Titanium Backup for apps etc. But it's still takes a lot of time... Is google backup any better than that?
What if I flash KDZ 20b with LG UP but as update! And then flash TWRP with fastboot and then immediately flash magisk without formatting data to remove encryption?
Click to expand...
Click to collapse
I flashed twrp with fastboot flash, but twrp showed a error with /data (that was because /data was encrypted) so you will need to format /data anyway.

Flash kdz with uppercut (update option) than re root installing twrp from adb and magisk from recovery (using sd card) no need to format data no factory reset!

ziotapa said:
Flash kdz with uppercut (update option) than re root installing twrp from adb and magisk from recovery (using sd card) no need to format data no factory reset!
Click to expand...
Click to collapse
Yes, without booting up to android, data will not be encrypted. Melina kernel stops the encryption also.

Thx for your suggestions, the following method worked perfectly and i kept all my data intact:
0. make sure magisk 16.4 is on your sd card
1. download and flash v20b.kdz with LGUP+Uppercut using "upgrade"
2. enable USB debugging and enter fastboot
3. flash melina twrp 3.2.1 with fastboot
4. directly enter twrp with button combo (hold power+vol down, release power when LG logo appears and immediately press and hold power again)
5. in twrp, don't do anything except install magisk. Ignore all errors then reboot.
6. profit

clouds5 said:
Thx for your suggestions, the following method worked perfectly and i kept all my data intact:
0. make sure magisk 16.4 is on your sd card
1. download and flash v20b.kdz with LGUP+Uppercut using "upgrade"
2. enable USB debugging and enter fastboot
3. flash melina twrp 3.2.1 with fastboot
4. directly enter twrp with button combo (hold power+vol down, release power when LG logo appears and immediately press and hold power again)
5. in twrp, don't do anything except install magisk. Ignore all errors then reboot.
6. profit
Click to expand...
Click to collapse
Have you tried to install melina kernel after installint magisk? Or after installint magisk, rebooting to system and rebooting to twrp solve all the errors of twrp?

mprovi_15 said:
Have you tried to install melina kernel after installint magisk? Or after installint magisk, rebooting to system and rebooting to twrp solve all the errors of twrp?
Click to expand...
Click to collapse
No, I only did what I wrote earlier. From what I understand if you want things to work more or less in twrp you need to format data to remove encryption. My goal was to keep data, update and get root.

Anyone tried to unroot und flash stockrecovery?
Hi,
I got the same situation here. TWRP installed as recovery and magisk 16.0 installed for root.
My question: Does the unroot / auto-uninstall with magisk itself work on the h870? Can´t I then just fastboot flash the stock-recovery?
After that the OTA-Update should work! Should not?
Did anyone try this way already?
Regards

Treklof said:
Hi,
I got the same situation here. TWRP installed as recovery and magisk 16.0 installed for root.
My question: Does the unroot / auto-uninstall with magisk itself work on the h870? Can´t I then just fastboot flash the stock-recovery?
After that the OTA-Update should work! Should not?
Did anyone try this way already?
Regards
Click to expand...
Click to collapse
You could try. I never had success with unroot/reflashing stock recovery before OTA updates on other devices, but never tried with LG G6.
But really it's just easier to flash .kdz since you have to reflash twrp and magisk anyway, but that's just IMHO

Always boot in recovery mode after an update

Hi,
I was updating my OP6T to the new version (Magisk + Xxx NoLimits), but after the reboot post-update the device started to reboot to recovery after it booted. So I've tried to delete Magisk but the problem was still present, so I've decided to download the latest Oxygen ROM from the OnePlus and flash it from TWRP, but after flashing, the device started to always boot to recovery (before the OnePlus boot animation).
At least i tried to restore a nandroid backup of 1 month ago (System, Boot and Data), but still the device after the restore still boot to recovery before the boot animation.
I've only tried the system reboot (I've not tried to force boot another slot).
Do you have a solution to try before formatting the internal storage?
Thanks
Edit: After unistalling magisk and reflashing it again, now the device boots again, but immediately after (when the lock screen appear) the device reboot automatically to recovery again

Try this:
- in twrp , dirty flash the rom you are using (Oxygen os)
- factory reset
- flash twrp (the latest the better)
- flash Magisk 19.1
Reboot to system.
If this not working, Format data will work.

null0seven said:
Try this:
- in twrp , dirty flash the rom you are using (Oxygen os)
- factory reset
- flash twrp (the latest the better)
- flash Magisk 19.1
Reboot to system.
If this not working, Format data will work.
Click to expand...
Click to collapse
Factory reset from TWRP?

yes

null0seven said:
yes
Click to expand...
Click to collapse
So, do you mean the classic Wipe data, cache and dalvik?

https://forum.xda-developers.com/oneplus-6t/how-to/official-oxygenos-9-0-4-ota-oneplus-6t-t3860953
TWRP Users
1. Boot into TWRP and Flash the Latest Magisk Uninstaller
2. Flash the latest Full Oxygen OS Zip
3. Flash the TWRP installer Zip
4. Reboot to RECOVERY to make sure TWRP stays and continue to root.
5. Flash the Latest Magisk to maintain root
6. Reboot System and Enjoy the latest firmware without any data loss
Click to expand...
Click to collapse
I am guessing you skipped the first step...
Try this:
Flash the OTA zip
Reboot (you will be unrooted and with stock recovery)
Boot to TWRP through ADB
Flash magisk unistaller
Reboot
Boot to TWRP through ADB
Flash OTA zip
Flash TWRP
Reboot to TWRP
Flash magisk

Galeanatur said:
https://forum.xda-developers.com/oneplus-6t/how-to/official-oxygenos-9-0-4-ota-oneplus-6t-t3860953
I am guessing you skipped the first step...
Try this:
Flash the OTA zip
Reboot (you will be unrooted and with stock recovery)
Boot to TWRP through ADB
Flash magisk unistaller
Reboot
Boot to TWRP through ADB
Flash OTA zip
Flash TWRP
Reboot to TWRP
Flash magisk
Click to expand...
Click to collapse
I don't have the OTA but the full rom, isn't simplier to update with the full ROM?
I think I'm going to try the null0seven's solution

null0seven said:
Try this:
- in twrp , dirty flash the rom you are using (Oxygen os)
- factory reset
- flash twrp (the latest the better)
- flash Magisk 19.1
Reboot to system.
If this not working, Format data will work.
Click to expand...
Click to collapse
Ok, I've done this and actually is even worse, the device started to boot in recovery again and TWRP doesn't recognize that the internal storage is crypted, so i can't even access the internal storage (it shows only strange folders), so, now I can't flash the nandroid backup anymore.

I also mean FULL rom .zip.
Format data in twrp or in Fastboot. Or use MSM tool .
https://forum.xda-developers.com/oneplus-6t/how-to/tool-6t-msmdownloadtool-v4-0-oos-9-0-5-t3867448
all of them will wipe ALL in youre phone, but it will work.

null0seven said:
I also mean FULL rom .zip.
Format data in twrp or in Fastboot. Or use MSM tool .
https://forum.xda-developers.com/oneplus-6t/how-to/tool-6t-msmdownloadtool-v4-0-oos-9-0-5-t3867448
all of them will wipe ALL in youre phone, but it will work.
Click to expand...
Click to collapse
So I've to Full wipe and then adb sideload the ROM? Because at the current state I can't even boot the device, it always starts in TWRP
Edit: I've also tried the blue_spark's version but nothing changed, TWRP can't recognize the encrypted storage

you can try this first.
https://forum.xda-developers.com/oneplus-6t/how-to/rom-stock-fastboot-roms-oneplus-6t-t3862516

fuji97 said:
Hi,
I was updating my OP6T to the new version (Magisk + Xxx NoLimits), but after the reboot post-update the device started to reboot to recovery after it booted. So I've tried to delete Magisk but the problem was still present, so I've decided to download the latest Oxygen ROM from the OnePlus and flash it from TWRP, but after flashing, the device started to always boot to recovery (before the OnePlus boot animation).
At least i tried to restore a nandroid backup of 1 month ago (System, Boot and Data), but still the device after the restore still boot to recovery before the boot animation.
I've only tried the system reboot (I've not tried to force boot another slot).
Do you have a solution to try before formatting the internal storage?
Thanks
Edit: After unistalling magisk and reflashing it again, now the device boots again, but immediately after (when the lock screen appear) the device reboot automatically to recovery again
Click to expand...
Click to collapse
When you're saying you're flashing the full ROM after wiping, are you meaning the xxx no limit? If so this isn't an os rom it's just a magisk module rom that's an add on to oxygen os. You need to wipe and flash the latest oxygen os rom, stable or beta which ever you're using, then flash TWRP, flash your os again on the other slot, flash TWRP, flash magisk, if your system boots fine then flash the xxx no limits rom in twrp.

ebproject said:
When you're saying you're flashing the full ROM after wiping, are you meaning the xxx no limit? If so this isn't an os rom it's just a magisk module rom that's an add on to oxygen os. You need to wipe and flash the latest oxygen os rom, stable or beta which ever you're using, then flash TWRP, flash your os again on the other slot, flash TWRP, flash magisk, if your system boots fine then flash the xxx no limits rom in twrp.
Click to expand...
Click to collapse
No, I flashed the full ROM downloaded from the OnePlus server

Have you tried formatting data?

Cablespider said:
Format data.
Click to expand...
Click to collapse
So, full format data and flash rom + TWRP + Magisk?

fuji97 said:
No, I flashed the full ROM downloaded from the OnePlus server
Click to expand...
Click to collapse
You're best bet is to use the MSM tool
https://forum.xda-developers.com/oneplus-6t/how-to/tool-6t-msmdownloadtool-v4-0-oos-9-0-5-t3867448

Ok, I've decided to use MSM to recover the device, I've lost the internal storage, but at least the device is working again.
Thank you to everyone who helped me in this thread

fuji97 said:
Ok, I've decided to use MSM to recover the device, I've lost the internal storage, but at least the device is working again.
Thank you to everyone who helped me in this thread
Click to expand...
Click to collapse
Maybe it was a Magisk module that caused it. I removed pixel module from Magisk and it done the same to me.

Can't update my Redmi note 7 Indian variant

Sorry for my wrong English
I am currently on stock miui 10.3.6.0 .I have unlocked the bootloader,Installed TWRP recovery & rooted my device with magisk.Now i am unable to get the latest miui 10.3.7.0 update.!
Is there any way in whick i can update my device to latest miui rom?
If there please help me.
I am not finding any link which is helping me.
I downloaded latest miui recovery rom from here but unfortunately there is an error i.e flash all.bat is missing in xiaomiflashtool.Tried to flash the same rom through TWRP but there again is an error i.e compatibility zip missing.
a download link to miui 10.3.7.0 fastboot rom will be appreciated.please help
Thanks in advance

Look here: https://forum.xda-developers.com/redmi-note-7/help/ota-update-unlocked-rooted-device-t3963409/page2
Download the full recovery rom from here: https://xiaomifirmwareupdater.com/miui/

darhma said:
Look here: https://forum.xda-developers.com/redmi-note-7/help/ota-update-unlocked-rooted-device-t3963409/page2
Download the full recovery rom from here: https://xiaomifirmwareupdater.com/miui/
Click to expand...
Click to collapse
Thanks very much it helped. I have downloaded fastboot Rom and flashed it. I have another big issue,after flashing 10.3.7.0 update I got miui stock recovery Installed so I again.
Flashed twrp from fastboot.
Then format data.
Flash magisk.
And reboot.
But after successful reboot and setup when I choose to use pattern or pin or password as authentication.The device is not recognizing my correct pin or password.It says password incorrect. Please help I am not finding any solution for this.
What is the correct pattern to install recovery to successful magisk install.
Thanks

ChandrakantBelell said:
Thanks very much it helped. I have downloaded fastboot Rom and flashed it. I have another big issue,after flashing 10.3.7.0 update I got miui stock recovery Installed so I again.
Flashed twrp from fastboot.
Then format data.
Flash magisk.
And reboot.
But after successful reboot and setup when I choose to use pattern or pin or password as authentication.The device is not recognizing my correct pin or password.It says password incorrect. Please help I am not finding any solution for this.
What is the correct pattern to install recovery to successful magisk install.
Thanks
Click to expand...
Click to collapse
Why did you used fastboot rom instead of the recovery rom? This way you didn't update the rom but reinstalled it. So I think that the only way to get rid of the password request is to format data partition from recovery and then install magisk. Next time you have to update you have to download the RECOVERY rom, dirty flash it and flash magisk before rebooting to system.

darhma said:
Why did you used fastboot rom instead of the recovery rom? This way you didn't update the rom but reinstalled it. So I think that the only way to get rid of the password request is to format data partition from recovery and then install magisk. Next time you have to update you have to download the RECOVERY rom, dirty flash it and flash magisk before rebooting to system.
Click to expand...
Click to collapse
Ok thanku.So now i have to flash TWRP recovery.then boot into recovery wipe data then install magisk right? Is there any other zip to flash? What is vm verity zip? I have to flash that also?

ChandrakantBelell said:
Ok thanku.So now i have to flash TWRP recovery.then boot into recovery wipe data then install magisk right? Is there any other zip to flash? What is vm verity zip? I have to flash that also?
Click to expand...
Click to collapse
You have to flash twrp reboot to recovery if it asks for a password format data then install magisk. Vbmeta is needed just when you change rom from miui to aosp, so in this case you don't need it

After update to V11.0.4.0.QFJEUXM TWRP no longer available

Hi Guys,
yesterday the new update came out, great.
I of course immediately pulled the zip (source) and installed it with TWRP (source).
So far no problems.
After a while I realized that I no longer had root because the apps stopped working.
When I wanted to boot into the TWRP to reinstall Magisk, I unfortunately found that it was no longer available, but only stock recovery.
Well, I thought to myself and tried to reinstall TWRP (method-twrp-3.3.1-2-davinci-fix), which was fatal, because my cell phone only booted into the Fastboot.
Then I got my cell phone, set up again with the Fastboot method.
Now I'm back to 11.0.4.0 but unfortunately without TWRP and root.
Can someone please describe how I can get TWRP and root again on Android 10?
I am thankful for every help !!!

Same thing happening to me, no matter what I do, stock recovery keeps overwriting TWRP

Oh dear, that doesn't sound good.
I hope there will be a solution to the problem soon.
I don't want to do without TWRP and root.
I wanted to try it according to these instructions "https://miui.blog/redmi-k20/twrp-mi-9t-redmi-k20-vbmeta-mauronofrio/". But don't trust me, I'm afraid that it won't work and I can start all over again.

Flash official TWRP this morning with fastboot commands without problem.
1. reboot in fastboot mode
2. Flash recovery with this command "fastboot flash recovery yourrecovery.img"
3. Reboot in recovery with this command "fastboot boot yourrecovery.img"
Any problems here.

The fact that twrp is lost when flashing official rom (even thought twrp itself) is normal. You just have to reboot into bootloader and flash twrp again and it will be back.
Your problem here is that you are using an old and unofficial twrp build, that has problems on newer roms. Flash official twrp and you'll be fine

houbaba said:
Flash official TWRP this morning with fastboot commands without problem.
1. reboot in fastboot mode
2. Flash recovery with this command "fastboot flash recovery yourrecovery.img"
3. Reboot in recovery with this command "fastboot boot yourrecovery.img"
Any problems here.
Click to expand...
Click to collapse
Can u share the twrp file, im unnable to flash the one i have without causing a bootloop

hounter17 said:
Can u share the twrp file, im unnable to flash the one i have without causing a bootloop
Click to expand...
Click to collapse
Download from the official twrp site here: https://twrp.me/xiaomi/xiaomimi9t.html

RedNas74 said:
Download from the official twrp site here: https://twrp.me/xiaomi/xiaomimi9t.html
Click to expand...
Click to collapse
Oh sorry it works? I read somewhere that the original causes also bootloops :good:

Found something on a Russian website.
Обновление TWRP Recovery от LR.Team для устройств на Android 10
Does anyone dare to test this?
Here is the link to the TWRP for our Mi9t
> TWRP-3.3.1-1109-DX (полный комплект для установки) <
Check it out...

I finally got it
I did the following.
"V11.0.4.0.QFJEUXM" flashed in the TWRP and booted into the system, TWRP will be overwritten.
Now flashed TWRP "twrp-3.3.1-0-davinci.img" in Fastboot and booted into Recovery (TWRP).
To be on the safe side, I had the cell phone booted again into the TWRP in the TWRP.
Then I flashed Magisk "Magisk-v20.3.zip".
Booted cell phone into the system and everything works.

frank808 said:
I finally got it
I did the following.
"V11.0.4.0.QFJEUXM" flashed in the TWRP and booted into the system, TWRP will be overwritten.
Now flashed TWRP "twrp-3.3.1-0-davinci.img" in Fastboot and booted into Recovery (TWRP).
To be on the safe side, I had the cell phone booted again into the TWRP in the TWRP.
Then I flashed Magisk "Magisk-v20.3.zip".
Booted cell phone into the system and everything works.
Click to expand...
Click to collapse
Where did you get the twrp file from?

You can use OrangeFox Recovery if you want a TWRP that can survive after flashing MIUI ROMs or updates :
https://forum.xda-developers.com/mi-9t/development/official-orangefox-recovery-project-t4037899

RedNas74 said:
Download from the official twrp site here: https://twrp.me/xiaomi/xiaomimi9t.html
Click to expand...
Click to collapse
Ok, I am on global 11.0.4.0 (QFJMIXM) and I used this latest twrp-3.3.1-0-davinci.img and I can confirm its working without bootloop.

ShiningScias said:
You can use OrangeFox Recovery if you want a TWRP that can survive after flashing MIUI ROMs or updates :
https://forum.xda-developers.com/mi-9t/development/official-orangefox-recovery-project-t4037899
Click to expand...
Click to collapse
To install TWRP, is it neccesary to wipe Data (or something else)?
And if Data must be wiped, does it mean that Data will no more be encrypted as originally by MIUI?
I have 11.0.4.0, rooted by Magisk (Magisk installed simply by patching and flashing boot.img, did not need TWRP for, did not wipe Data, etc) and I possibly want to have TWRP but don't want to loose encryption of Data, Widewine L1 and so

zgfg said:
To install TWRP, is it neccesary to wipe Data (or something else)?
And if Data must be wiped, does it mean that Data will no more be encrypted as originally by MIUI?
I have 11.0.4.0, rooted by Magisk (Magisk installed simply by patching and flashing boot.img, did not need TWRP for, did not wipe Data, etc) and I possibly want to have TWRP but don't want to loose encryption of Data, Widewine L1 and so
Click to expand...
Click to collapse
You don't need to wipe anything to install a custom Recovery (like TWRP).
TWRP can handle ROM encryption, you just need to install a correct TWRP, and version, for your current MIUI / Android version.
A custom Recovery doesn't change Widevine level.
And TWRP is useful in case of bootloop (because of an installed Magisk module, by example) or if you want to easily reinstall Magisk after ROM update.

RedNas74 said:
Download from the official twrp site here: https://twrp.me/xiaomi/xiaomimi9t.html
Click to expand...
Click to collapse
Micdu70 said:
You don't need to wipe anything to install a custom Recovery (like TWRP).
TWRP can handle ROM encryption, you just need to install a correct TWRP, and version, for your current MIUI / Android version.
Click to expand...
Click to collapse
Ok thanks, so starting from v11.0.4.0 QFJEUXM, rooted by Magisk (did not wipe Data or so, just patched and flashed boot img), is it ok just to flash (from Fastboot) twrp-3.3.1-0-davinci.img, downloaded from the official site https://twrp.me/davinci/twrp-3.3.1-0-davinci.img
Maybe I could test first by
fastboot boot twrp-3.3.1-0-davinci.img

zgfg said:
Ok thanks, so starting from v11.0.4.0 QFJEUXM, rooted by Magisk (did not wipe Data or so, just patched and flashed boot img), is it ok just to flash (from Fastboot) twrp-3.3.1-0-davinci.img, downloaded from the official site https://twrp.me/davinci/twrp-3.3.1-0-davinci.img
Click to expand...
Click to collapse
Yes, it should work.
But I prefer OrangeFox Recovery.

zgfg said:
so starting from v11.0.4.0 QFJEUXM, rooted by Magisk (did not wipe Data or so, just patched and flashed boot img), is it ok just to flash (from Fastboot) twrp-3.3.1-0-davinci.img, downloaded from the official site https://twrp.me/davinci/twrp-3.3.1-0-davinci.img
Maybe I could test first by
fastboot boot twrp-3.3.1-0-davinci.img
Click to expand...
Click to collapse
Micdu70 said:
Yes, it should work.
But I prefer OrangeFox Recovery.
Click to expand...
Click to collapse
Something is fishy. IMO, if that official TWRP is really ok for 11.0.4.0, then it should correctly boot by:
fastboot boot twrp-3.3.1-0-davinci.img
But phone rebooted into the dark.
TG, I didn't really flash with, so by long pressing Pow it rebooted to system.
Tried again, no avail
Edit:
Tried the same fastboot boot with
twrp-3.3.1-12-davinci-mauronofrio.img and also OrangeFox-R10.1_1-Stable-davinci.img (obtained by unzipping OrangeFox), but it also reboots to dark and I have to long press Pow to reboot to system

frank808 said:
Hi Guys,
yesterday the new update came out, great.
I of course immediately pulled the zip (source) and installed it with TWRP (source).
So far no problems.
After a while I realized that I no longer had root because the apps stopped working.
When I wanted to boot into the TWRP to reinstall Magisk, I unfortunately found that it was no longer available, but only stock recovery.
Well, I thought to myself and tried to reinstall TWRP (method-twrp-3.3.1-2-davinci-fix), which was fatal, because my cell phone only booted into the Fastboot.
Then I got my cell phone, set up again with the Fastboot method.
Now I'm back to 11.0.4.0 but unfortunately without TWRP and root.
Can someone please describe how I can get TWRP and root again on Android 10?
I am thankful for every help !!!
Click to expand...
Click to collapse
You can install twrp by All In One tool
You can find its thread here itself

I took the official TWRP. " Link "
Flashed in fastboat and then booted the phone with a key combination in TWRP.
With the Fastboot command it didn't work for me either, the cell phone remained black ...

How to install ANY CustomROM on OnePlus6T from OOS/CustomROM

So, I searched the internet for a method to flash a CustomROM on the OnePlus 6T. But somehow none of them worked, so I worked on one myself that at least works for me.
There are 2 methods, use Method A if you don't have a custom ROM installed and still use OxygenOS. Use Method B if you are using a custom ROM and want to have another one:
Method A: From OxygenOS to CustomROM
1. boot in twrp
2. in twrp, do a factory reset
3. flash latest oos zip(flashable ota, link will be below)
4. flash twrp installer zip(i recommend mauronofrio´s twrp, link wil be below)
5. check current slot, then reboot in twrp
6. check if slot changed, then do a factory reset
7. flash latest oos zip
8. flash twrp installer zip
9. reboot recovery, and check if slot changed
10. factory reset
11. flash custom rom zip
12. flash twrp installer zip
13. reboot twrp(check current slot)
14. check if slot changed(if yes:it worked, if no:repeat)
15. additional: flash magisk&gapps
then,your rom is ready to use
Method B: From Custom ROM to another Custom ROM
1. reboot to twrp
2. in twrp, do a factory reset
3. then select advanced wipe: wipe system,cache,data. DON’T WIPE VENDOR
4. flash custom rom zip
5. flash twrp installer zip
6. check which slot you´re in
7. reboot twrp
8. if slot changed, everything worked
9. flash gapps and magisk if you want
then, your rom is ready to use
So, I hope I have spared you many problems and wish you much fun with your Devices.
Links:
Mauronofrio TWRP: click here
OxygenOS Stable OTA 10.3.1: click here

DirtryElectro said:
So, I searched the internet for a method to flash a CustomROM on the OnePlus 6T. But somehow none of them worked, so I worked on one myself that at least works for me.
.......
Links:
Mauronofrio TWRP: click here
OxygenOS Stable OTA 10.3.1: click here
Very important note: Download the FULL OTA, not the local-upgrade OTA!
Click to expand...
Click to collapse
Some of those steps are unnecessary. Like doing a Factory Reset each time you boot to TWRP as that will mess up your Encryption. And in Method B, you mention to Wipe System. DO NOT UNDER ANY CIRCUMSTANCES WIPE SYSTEM ON THE 6T. IT WILL MESS UP YOUR DEVICE. This is the method I use to flash ROMs.
1. Boot to TWRP
2. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
3. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
4. Flash ROM + TWRP ,Format Data (Go to Wipe, in the lower right corner Format Data, type in 'YES' and hit Enter) -> Reboot to System
5. After first Boot, You can Reboot to Recovery & Flash Magisk (Optional).
These are for EvolutionX that has Gapps built-in so you don't need to flash Gapps. Otherwise you can Skip the Format Data after ROM flash in Step 4, Reboot to Recovery, Flash Gapps and then Format Data. I use these and they have worked flawlessly for me. Also when switching from one AOSP based ROM to another, it's generally recommended to flash OOS Before.

DarthVader said:
Some of those steps are unnecessary. Like doing a Factory Reset each time you boot to TWRP as that will mess up your Encryption. And in Method B, you mention to Wipe System. DO NOT UNDER ANY CIRCUMSTANCES WIPE SYSTEM ON THE 6T. IT WILL MESS UP YOUR DEVICE. This is the method I use to flash ROMs.
1. Boot to TWRP
2. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
3. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
4. Flash ROM + TWRP ,Format Data (Go to Wipe, in the lower right corner Format Data, type in 'YES' and hit Enter) -> Reboot to System
5. After first Boot, You can Reboot to Recovery & Flash Magisk (Optional).
These are for EvolutionX that has Gapps built-in so you don't need to flash Gapps. Otherwise you can Skip the Format Data after ROM flash in Step 4, Reboot to Recovery, Flash Gapps and then Format Data. I use these and they have worked flawlessly for me. Also when switching from one AOSP based ROM to another, it's generally recommended to flash OOS Before.
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Click to collapse
these are just the steps which worked for me, but ok

DarthVader said:
Some of those steps are unnecessary. Like doing a Factory Reset each time you boot to TWRP as that will mess up your Encryption. And in Method B, you mention to Wipe System. DO NOT UNDER ANY CIRCUMSTANCES WIPE SYSTEM ON THE 6T. IT WILL MESS UP YOUR DEVICE. This is the method I use to flash ROMs.
1. Boot to TWRP
2. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
3. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
4. Flash ROM + TWRP ,Format Data (Go to Wipe, in the lower right corner Format Data, type in 'YES' and hit Enter) -> Reboot to System
5. After first Boot, You can Reboot to Recovery & Flash Magisk (Optional).
These are for EvolutionX that has Gapps built-in so you don't need to flash Gapps. Otherwise you can Skip the Format Data after ROM flash in Step 4, Reboot to Recovery, Flash Gapps and then Format Data. I use these and they have worked flawlessly for me. Also when switching from one AOSP based ROM to another, it's generally recommended to flash OOS Before.
Click to expand...
Click to collapse
this helped me greatly! following the instructions above had my files corrupt when id factory reset. i dont have an otg usb. so the instructions above kind of troubled me. again, thank you!

Beefybeardedbear said:
this helped me greatly! following the instructions above from OP had my files corrupt when id factory reset. i dont have an otg usb. so the instructions from OP kind of troubled me. again, thank you!
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Click to collapse