Database Users

OP2 cannot upgrade from Oxygen OS 2.2.1/Cannot flash TWRP versions newer than 3.0.2-0

So.... Pokemon Go has a lot to answer for......
I have run into a really strange problem when trying to install an OTA on my *unrooted* Oneplus 2. I have been trying to fix this for days but I have completely run out of ideas.
I originally had a working stock Oxygen 3 (Marshmallow) rom with TWRP recovery on my device (not sure of the version). The device was rooted and apart from not being able to install OTAs, I was fairly happy with the setup. Then along came the Pokemon GO update that banned rooted devices. Ok, "big deal" I thought. I was quite content playing Ingress instead (a far better game by the way that doesn't rely on a "pay to win" structure). I really wasn't too worried but then I found out about "systemless root" and "Magisk". I thought that if I installed this correctly I could still play a bit of Pokemon GO when I wanted to and could toggle a root button in Magisk Manager to install OTAs when they became available.
This is where the problems started.
I followed a guide on how to unroot and install Magisk and "Phh's Superuser". The problem was that the Phh Superuser was being denied permissions for Magisk Manager, there were no pop up notifications prompting me to give it access, just toast notifications. I couldn't for the life of me figure out how to give it permission so the "enable root" slider button kept sliding back, not allowing root. This is when I used SuperSU ver 2.76 (Magisk version) and it seemed to work fine. I now had a stock Marshmallow rom with TWRP and Magisk Manager all working exactly how they should be. I could toggle root and play Pokemon GO, then return to a rooted state when I needed to.
"Awesome, mission accomplished." I thought. Now I just need to toggle root off, download the latest OTA and install it through Flashfire.
First I made a complete nandroid backup (as I've done with other devices many times before) through TWRP. I even copied the backup folder to my PC in case something went wrong.
Well, this is when the nightmare started.
The first mistake I made was to use Flashfire when it clearly stated that Oneplus devices were currently untested. Not sure if it was a big issue or not, but it was a mistake none the less. The second mistake I made was to not stop the stock recovery being replaced when prompted before the reboot. I assumed (and it even states in the app) that the custom recovery should be reverted back to the stock recovery when attempting to apply OTA updates.
So I went ahead and rebooted, waiting for the OTA to install. I'm fairly sure from memory that it went into the stock recovery, flashed the OTA and restarted.
This is when the phone soft bricked.
"Oh well, that is why I made the backup." I thought.
I reflashed TWRP in fastboot mode and attempted to restore my backup. No dice, the phone was still soft bricked.
(And by "soft bricked" and "boot looping" I mean the Oneplus logo was in the middle of the screen, "Powered by Android" was at the bottom and the two blue LEDs for the buttons either side of the fingerprint scanner/home button remained on. This for me was the tell tale sign of the soft brick because these two light go off after a few seconds after rebooting usually.
So from here I have tried EVERYTHING. All I really want now is a working stock (rooted) Marshmallow rom with TWRP. I have downloaded many different full rom zips and attempted to flash them through TWRP with no success, I have returned to stock recovery and tried flashing signed roms with no success, I've even tried flashing the official CM13 rom for Oneplus 2 (with the correct GAPPs and kernel) through TWRP with no luck.
But here is where it gets interesting......
There are a few things that are really weird...
1. I have always been able to get into Fastboot mode and ADB and Fastboot commands "work".
* Operations succeed but don't stick (for example trying to flash TWRP versions 3.0.2-1 and 3.0.2-2 through Fastboot mode result in no recovery being there at all.
2. I can flash TWRP recovery though Fastboot mode but ONLY VERSIONS 3.0.2-0 and lower. I can also successfully flash the stock recovery.
3. I can flash OxygenOS 2.2.1 but NOT ANY VERSION RELEASED AFTER THAT. Doing so results in the soft brick "bootloop" I mentioned earlier.
4. Attempting to flash the official CM13 rom for Oneplus 2 doesn't work either. Originally I got the error 7 message, but after editing "Updater-script" in the rom and re-zipping, the process seemed to work fine in TWRP but the reboot gave me... you guessed it... a softbrick.
I have flashed custom roms on a few different devices before so I'm not a COMPLETE newbie when it comes to this stuff, but I am by no means a developer or even anything close to one. I have bricked this phone in the past (long story, involved getting it without an invite and it being shipped to me with spyware on it) but I used a guide very similar to this and it worked a treat.
www(dot)androidbrick(dot)com/unbrick-oneplus-one-two-3-qualcomm-hs-usb-qdloader-9008
So, thinking that this process would format all partitions and start me from scatch I tried it. It worked fine but I was still unable to upgrade from Oxygen OS 2.2.1 or install TWRP versions 3.0.2-1 or 3.0.2-2.
I have tried all sorts of things. I have wiped, flashed and wiped again. Factory resets, dirty flashes, clean flashes.... everything. All sorts of different sources for the TWRP images and Oxygen roms... nothing seems to work.
It's just so weird considering it's not a hard brick... just a soft brick.
So I really need my phone so I am sitting on this current build because it is the only one that works.
Here are some details of the current build I am using. (using CPU-Z app)
Model: Oneplus 2 (ONE A2001)
Android version: 5.1.1
Oxygen OS version: 2.2.1
Bootloader: Unknown
Build ID: ONE A2001_14_160226
Java VM: ART 2.1.0
OpenGL ES: 3.1
Kernel Architecture: aarch64
Kernel version: 3.10.49-perf+ (56)
Root access: Yes
Super user app: SuperSU Free v2.46 (Chainfire)
OEM unlocking: Enabled
USB debugging: Enabled
And these are some of the ZIPs and IMGs that refuse to be flashed to my device.
TWRP-3.0.2-1-oneplus2
TWRP-3.0.2-2-oneplus2
Grarak's TWRP recovery IMG for Oneplus2 (modified to install CM13) according to this guide:
missingtricks(dot)net/oneplus-2-official-cyanogenmod-13
cm-13.0-20160924-NIGHTLY-oneplus2
OnePlus2Oxygen_14_OTA_019_all_1606041303_bd42fc5cc5cc4ab2
And also my TWRP backup named 2016-09-16--09-44-09
I am really at a loss as to what to do next. ANY help ANYONE could give me would be greatly appreciated. I have been all over the net looking for ways around this bt have had no luck.
As I've said, I'm not a huge tech head, but I'm not a newbie either. The only thing I can think of is that somehow one of the partitions (maybe boot? ) may have been corrupted somehow when messing around with systemless root. But I don't know how considering it's "systemless". If anyone knows how to check for corrupted partitions on the Oneplus 2 please let me know and I'll try it. Maybe formatting these partitions might help (????), but I don't want to permanently brick my phone.
But I don't know how I've got this particular build working if one of the partitions has been corrupted. And the corrupted partition thing is just a guess.....
Please, anyone, someone point me in the right direction. Again, any and all feddback is welcomed and would be very much appreciated.
This is all Pikachu's fault.

Kamakiriash said:
A very long post...
Click to expand...
Click to collapse
The normal way too update from OOS 2 to OOS 3 is:
Flash the OOS 3 signed flashable zip via TWRP to update the bootloader and firmware
Flash TWRP 3.0.2-2 via your current TWRP's recovery image flashing option
Reboot recovery via TWRP so that you now have a recovery that's compatible with the new bootloader
Wipe data, cache & dalvik-cache (but not internal storage)
Flash the OOS 3 signed flashable zip again to update the system
Flash one of the modified SuperSU zips if you want root
Reboot system
All the files you need are in post #1 of this thread.

Thank you so much Spannaa!
I was clearly missing a vital step here and let it be a lesson to anyone else in this situation....
As Spannaa said......
1. Flash the OOS 3 signed flashable zip via TWRP to update the bootloader and firmware
2. Flash TWRP 3.0.2-2 via your current TWRP's recovery image flashing option
3. Reboot recovery via TWRP SO THAT YOU NOW HAVE A RECOVERY THAT'S COMPATIBLE WITH THE NEW BOOTLOADER!
4. Wipe data, cache & dalvik-cache (but not internal storage)
5. Flash the OOS 3 signed flashable zip AGAIN to update the system.
Again, thankyou Spanna for your quick and accurate response.
The order in which you flash zips and imgs is very important it seems.
You really saved me.
I restored the TWRP backup and I am back to where I started.
Is it now possible to apply OTAs when I toggle the root off in Magisk manager and install using the stock recovery? What do you think would be the best way to do this?
And would it be worth moving to the official build of CM13 for Oneplus 2?
Thanks again, Spannaa. :victory:

Kamakiriash said:
Thank you so much Spannaa!
I was clearly missing a vital step here and let it be a lesson to anyone else in this situation....
As Spannaa said......
1. Flash the OOS 3 signed flashable zip via TWRP to update the bootloader and firmware
2. Flash TWRP 3.0.2-2 via your current TWRP's recovery image flashing option
3. Reboot recovery via TWRP SO THAT YOU NOW HAVE A RECOVERY THAT'S COMPATIBLE WITH THE NEW BOOTLOADER!
4. Wipe data, cache & dalvik-cache (but not internal storage)
5. Flash the OOS 3 signed flashable zip AGAIN to update the system.
Again, thankyou Spanna for your quick and accurate response.
The order in which you flash zips and imgs is very important it seems.
You really saved me.
I restored the TWRP backup and I am back to where I started.
Is it now possible to apply OTAs when I toggle the root off in Magisk manager and install using the stock recovery? What do you think would be the best way to do this?
And would it be worth moving to the official build of CM13 for Oneplus 2?
Thanks again, Spannaa. :victory:
Click to expand...
Click to collapse
Glad you're sorted.
Not sure about Magisk as I've never used it.
CM13 is OK but whether it's worth you moving to it is your choice. Personally, I prefer TipsyOS!

Hi,
I face the exact issue with same Oxygen OS and TWRP versions mentioned, I have tried the above steps but there are some problems:
1. Flash the OOS 3 signed flashable zip via TWRP to update the bootloader and firmware
Click to expand...
Click to collapse
when I checked the option (Zip signature verification) in TWRP, the installation failed with error "Zip signature verification failed! Error installing zip file '/sdcard/oneplus.zip'", but it's successfully installed when I unchecked (Zip signature verification) option.
2. Flash TWRP 3.0.2-2 via your current TWRP's recovery image flashing option
3. Reboot recovery via TWRP SO THAT YOU NOW HAVE A RECOVERY THAT'S COMPATIBLE WITH THE NEW BOOTLOADER!
Click to expand...
Click to collapse
second problem is that after installing the TWRP 3.0.2-2 (or above), then reboot recovery, I can't access the recovery again and the phone stuck on bootloop.
any idea ?

Aood said:
Hi,
I face the exact issue with same Oxygen OS and TWRP versions mentioned, I have tried the above steps but there are some problems:
when I checked the option (Zip signature verification) in TWRP, the installation failed with error "Zip signature verification failed! Error installing zip file '/sdcard/oneplus.zip'", but it's successfully installed when I unchecked (Zip signature verification) option.
second problem is that after installing the TWRP 3.0.2-2 (or above), then reboot recovery, I can't access the recovery again and the phone stuck on bootloop.
any idea ?
Click to expand...
Click to collapse
I don't have a OP2 anymore but that post was seven months ago and the instructions worked for numerous users.
Don't enable zip signature verification in TWRP - it's unnecessary.
Flash TWRP 3.0.2-2 via your current TWRP's recovery image flashing option and then reboot recovery directly from TWRP.

thanx for replay Spannaa,
Flash TWRP 3.0.2-2 via your current TWRP's recovery image flashing option and then reboot recovery directly from TWRP.
Click to expand...
Click to collapse
I have already did that, but same issue once I reboot "directly from TWRP" , the TWRP doesn't show up and bootloop start again.

Aood said:
thanx for replay Spannaa,
I have already did that, but same issue once I reboot "directly from TWRP" , the TWRP doesn't show up and bootloop start again.
Click to expand...
Click to collapse
Last chance and then I'll leave this for someone that has the OP2.
Are you rebooting recovery "directly from TWRP" or rebooting system?
Is your bootloader still unlocked?

Last chance and then I'll leave this for someone that has the OP2.
Are you rebooting recovery "directly from TWRP" or rebooting system?
Is your bootloader still unlocked?
Click to expand...
Click to collapse
Yes, rebooting recovery "directly from TWRP"
and bootloader loader is unlocked,..
anyway it's not important to fix the phone, it's almost one year since last time I use it, yesterday I saw it in the drawer and try to figure out the issue..,

Re-Rooting 1+5 after OS 5.1.1 Update

So I tried updating to Oxygen is 5.0 ran into an install issue, stuck in boot loop. Lucky I had done a Nandroid back up and restore everything. The other night I decided to update to 5.1.1 thinking why not get Android 8.1.0 on my AWESOME phone. Downloaded update, placed in internal storage, booted into TWRP to do a Nandroid back up (due to issues with past update). Back up failed needed to clean drive. So I decided, phone works in Android 7.1.1, why can't what's not broken. Rebooted phone and somehow the update activated. I freaked since last time it failed and not stuck in a loop. This time update was successful but still got stuck in a boot loop. I plugged my phone to my computer and noticed all my files were gone on their install storage, no files / foldersI recognized (e.g. DCIM, DATA, DOWNLOAD, etc). Emailed One Plus and chatted with them. TWRP was gone and was back on stock recovery. Since all was lost I was asked to "Erase All". I did, rebooted and I'm now on 8.1.1 but all my stuff was lost. So I've done since searching and found FlashFire do to a Nandroid backup but need root. So my question is...
Can I re-root my phone without using TWRP but stock recovery and use FlashFire for my back ups? I am not going to flash custom ROM but if I need to flash something, wouldn't stock ROM flash anything on my phone (Magisk)?
If so, can anyone provide me with assistance on re-rooting my phone without TWRP.
Thank you

As far as i know you can't flash anything with stock recovery so you can't root. After flashing the stock os is normal that twrp is been erased by the stock. Just re flash the twrp. I mean, maybe i didn't get the problem, why you can't reflash twrp? If you do that flash twrp codeworx Universal with fastboot in the bootloader, boot in twrp, wipe cache/dalvik, flash magisk 15.3, wipe cache/dalvik, reboot system, update magisk to 16 with the app. I do that way and it worked

Hi
To root your OnePlus 5, you must to follow carefuly the steps below and take your time.
1 - Make a full backup of your data
2 - Unlock the bootloader (Note that'll erase your phone)
3 - Install another recovery : TWRP. This one : https://sourceforge.net/projects/ch...-20180414-codeworkx-cheeseburger.img/download
4 - Flash the full rom Oxygen OS 5.1.1 : http://otafsg.h2os.com/patch/amazon...23_OTA_034_all_1804201219_3824995916a49ee.zip
5 - Install magisk : https://github.com/topjohnwu/Magisk/releases/download/v16.0/Magisk-v16.0.zip
6 - Clear cache / Dalvik
7 - You're all done, reboot the phone
8 - Once your phone has booted up, install magisk manager : https://github.com/topjohnwu/MagiskManager/releases/download/v5.7.0/MagiskManager-v5.7.0.apk
Check this tread, that'll help you as well : https://forum.xda-developers.com/oneplus-5/how-to/oneplus-5-unlock-bootloader-flash-twrp-t3624877

vanzant83 said:
As far as i know you can't flash anything with stock recovery so you can't root. After flashing the stock os is normal that twrp is been erased by the stock. Just re flash the twrp. I mean, maybe i didn't get the problem, why you can't reflash twrp? If you do that flash twrp codeworx Universal with fastboot in the bootloader, boot in twrp, wipe cache/dalvik, flash magisk 15.3, wipe cache/dalvik, reboot system, update magisk to 16 with the app. I do that way and it worked
Click to expand...
Click to collapse
Hello, thanks for the info and yes, I did try flashing Magisk with stock recovery, while waiting for a reply and can confirm installation failed. So if I reflash TWRP, flashing Magisk using TWRP will work. Therefore, do you have instructions (step-by-step) on how to install TWRP. I have downloaded the latest TWRP image from their website (twrp-3.1.1-1 cheeseburger) onto my desktop. Bootloader is already unlocked as I was previously rooted under Android 7.1.
Thank you.

https://forum.xda-developers.com/oneplus-5/how-to/oneplus-5-unlock-bootloader-flash-twrp-t3624877
This is the official guide step by step, scroll down until you find "flashing twrp" if you had already unlocked the bootloader ( you already did that right??? xD). Anyway about the recovery and magisk version. The guys in the 5.1.1 thread advised to flash magisk 15.3 instead the 16 and only after the system reboot to make the upgrade to 16 with magisk app (dunno why). But when i tried to do that the last version of twrp (3.1.1-1) failed the flash. So i flashed the twrp 3.1.1-0-universal and 15.3 magisk. I can confirm this combination work, i can't tell for other combinations.

vanzant83 said:
https://forum.xda-developers.com/oneplus-5/how-to/oneplus-5-unlock-bootloader-flash-twrp-t3624877
This is the official guide step by step, scroll down until you find "flashing twrp" if you had already unlocked the bootloader ( you already did that right??? xD). Anyway about the recovery and magisk version. The guys in the 5.1.1 thread advised to flash magisk 15.3 instead the 16 and only after the system reboot to make the upgrade to 16 with magisk app (dunno why). But when i tried to do that the last version of twrp (3.1.1-1) failed the flash. So i flashed the twrp 3.1.1-0-universal and 15.3 magisk. I can confirm this combination work, i can't tell for other combinations.
Click to expand...
Click to collapse
Hello, I finally got some time to re-root my phone and was reading the instructions you provided and clicked on the download but they are TWRP 3.2.1.x and Magisk 16. Do you have the links for the files you used
Grazie

jmoricone said:
Hello, I finally got some time to re-root my phone and was reading the instructions you provided and clicked on the download but they are TWRP 3.2.1.x and Magisk 16. Do you have the links for the files you used
Grazie
Click to expand...
Click to collapse
Sorry man i typed wrong, the one i meant was 3.2.1-0 Universal codeworkx, the fourth from up to down. About 15.3 magisk i dunno where you can find It, maybe try some google research, otherwise i can send It to you by email, is a little file

Try this link, get the ZIP file from the version you want: https://github.com/topjohnwu/Magisk/releases/
In case you need, this the official section: https://forum.xda-developers.com/apps/magisk

vanzant83 said:
Sorry man i typed wrong, the one i meant was 3.2.1-0 Universal codeworkx, the fourth from up to down. About 15.3 magisk i dunno where you can find It, maybe try some google research, otherwise i can send It to you by email, is a little file
Click to expand...
Click to collapse
Hey there, sorry for the late response..but thank you for the assist..phone is rerooted..all is good..thanks again

Strange OTA behaviour after installing Magisk

After a long time I finally decided to upgrade to PIE (stock).
The latest official Fastboot ROM I could find is from May (V10.0.9.0) - so this is what I used to install.
Everything went fine, and as expected I was prompted for an OTA upgrade to August which I performed. The Build number become ...V10.0.12.0
Afterwards I installed Magsik (V19.3) via Boot to TWRP - also with no problem.
But surprise: I was prompted for another OTA-upgrade this time to July2019, and the Build number shows V10.0.9.0 !
Ok, I uninstalled Magisk to get this upgrade done, but the upgrade failed..
Went back to re-flash the Fastboot ROM for May and .. and ... and the story repeated.
Any idea what's going on?

I would reflash whole ROM with the latest official Fastboot ROM again (do not forget to remove bootloader lock command from the flashing script or you'll lose your data) and flash Magisk from TWRP. For the OTA update follow this guide, you don't really need to mess up with TWRP more than once https://github.com/topjohnwu/Magisk/blob/master/docs/tutorials.md.
One thing to keep in mind - do NOT allow system modifications in TWRP as it will mount system partition as R/W and prevent future OTA updates to install. If you allowed it somewhere in the past (or you don't remember) - delete TWRP settings from /sdcard/TWRP and pay attention on the first boot of TWRP.

What is update process for OP6T 9.0.16 > 10.3.3 rooted [Global]

I have OP6T OxygenOS 9.0.16 and I would like to update it to the latest 10.3.3 with root.
What should be my process of doing so? I have not been in touch with rooting for the past 3 years so I don't want to mess things up. Another note is that while I am on OxygenOS 9.0.16 I tried to root it which was failed, but now few banking and calling apps such as TextNow thinks that my phone is rooted and they can not run -- but my phone is not properly rooted according to root verification apps.
Please tell me how should I do the update to the latest version from this point and then I would like to unlock bootloader and install recovery and root it as well.
Please advice.
BTW my OP6T is global

a4abbas said:
I have OP6T OxygenOS 9.0.16 and I would like to update it to the latest 10.3.3 with root.
What should be my process of doing so? I have not been in touch with rooting for the past 3 years so I don't want to mess things up. Another note is that while I am on OxygenOS 9.0.16 I tried to root it which was failed, but now few banking and calling apps such as TextNow thinks that my phone is rooted and they can not run -- but my phone is not properly rooted according to root verification apps.
Please tell me how should I do the update to the latest version from this point and then I would like to unlock bootloader and install recovery and root it as well.
Please advice.
BTW my OP6T is global
Click to expand...
Click to collapse
Hello,
Here is a link that will help you out with this update process:
https://forum.xda-developers.com/oneplus-6t/how-to/official-oxygenos-9-0-4-ota-oneplus-6t-t3860953

a4abbas said:
I have OP6T OxygenOS 9.0.16 and I would like to update it to the latest 10.3.3 with root.
What should be my process of doing so? I have not been in touch with rooting for the past 3 years so I don't want to mess things up. Another note is that while I am on OxygenOS 9.0.16 I tried to root it which was failed, but now few banking and calling apps such as TextNow thinks that my phone is rooted and they can not run -- but my phone is not properly rooted according to root verification apps.
Please tell me how should I do the update to the latest version from this point and then I would like to unlock bootloader and install recovery and root it as well.
Please advice.
BTW my OP6T is global
Click to expand...
Click to collapse
Flash OOS full rom zip on both slots using TWRP also flash TWRP installer zip on both slots reboot recovery flash magisk reboot system. Easy peasy.
Example:
Boot recovery: fastboot boot twrp.img
flash OOS 10.3.3 full rom zip
flash TWRP installer zip, reboot recovery,
flash OOS 10.3.3 full rom zip, format data, wipe data,
flash TWRP installer zip
Reboot recovery, flash magisk,
reboot system.
Note: I use a USB stick. I flash magisk zip off my USB stick.
That's what I do when I use OOS on my 6t far as installation goes.
Edited

flash713 said:
Flash OOS full rom zip on both slots using TWRP also flash TWRP installer zip on both slots reboot recovery flash magisk reboot system. Easy peasy.
Example:
Boot recovery: fastboot boot twrp.img
flash OOS 10.3.3 full rom zip
flash TWRP installer zip, reboot recovery,
flash OOS 10.3.3 full rom zip, format data, wipe data,
flash TWRP installer zip
Reboot recovery, flash magisk,
reboot system.
Note: I use a USB stick. I flash magisk zip off my USB stick.
That's what I do when I use OOS on my 6t far as installation goes.
Edited
Click to expand...
Click to collapse
Are you sure there is no need to update to 9.0.17 and then 10.3.3?
I've asked once and someone said that 9.0.17 is neccessary before update to 10.3.x.
Also there is option to flash from system without losing magisk modules:
1. Flash manually from update center (do not reboot)
2. Enter magisk and flash to another slot (after OTA)
3. Flash TWRP installer like magisk module
4. Reboot
But I'm not sure if I remember it correctly.

Michalec said:
Are you sure there is no need to update to 9.0.17 and then 10.3.3?
I've asked once and someone said that 9.0.17 is neccessary before update to 10.3.x.
Also there is option to flash from system without losing magisk modules:
1. Flash manually from update center (do not reboot)
2. Enter magisk and flash to another slot (after OTA)
3. Flash TWRP installer like magisk module
4. Reboot
But I'm not sure if I remember it correctly.
Click to expand...
Click to collapse
10.3.3 is all that you need. 9.0.17 isn't the only way anymore.

Michalec said:
Are you sure there is no need to update to 9.0.17 and then 10.3.3?
I've asked once and someone said that 9.0.17 is neccessary before update to 10.3.x.
Also there is option to flash from system without losing magisk modules:
1. Flash manually from update center (do not reboot)
2. Enter magisk and flash to another slot (after OTA)
3. Flash TWRP installer like magisk module
4. Reboot
But I'm not sure if I remember it correctly.
Click to expand...
Click to collapse
I have a T-Mobile SIM unlock OnePlus 6t and I converted it to an international model so when my conversation was done I was on OOS 9.0.1.1 and I booted TWRP and installed 10.3.4 full rom on both slots and also recovery installer and all just like my previous posts stated and everything went fine. I used mauronofrio's TWRP the version just before the latest 3.4xx when I did this.
I always download quite a bit of various firmwares and also TWRP versions before I start flashing things just in case something goes wrong I already have other things maybe I can use and I don't have to stop and wait for some download to finish... And I'm quite sure you know this but definitely make a backup of everything beforehand to USB or transfer it to your pc just in case you end up needing it as a precaution.
Edit added:
I am assuming that you already unlocked your bootloader... I believe everyone knows to do that that's on XDA forums before you can do anything to any device .. I say this after reading post below me here. I guess I should have said that earlier but I just assume everyone knows that on the forums... My bad. ??
From fastboot on Linux PC:
sudo fastboot oem unlock (then hit enter on keyboard) use volume keys to move to unlock option and your Power button to select it and confirm. For more info see: https://www.xda-developers.com/oneplus-6t-unlock-bootloader-root/
Super easy to unlock bootloader just remember it does wipe your device clean so move anything to want to PC or USB stick first...

I would think you could just update oxygenOS to latest then re-root no? Assuming your already bootloader unlocked which it seems like would be the case if you have an obsolete magisk installation.
Edit: re-reading your post maybe it is not unlocked as you failed to root. In this case just unlock then flash the latest fastboot image and then magisk as others have already stepped you through. You will lose data when you unlock so backup first.

So if I'm on 9.0.16 I could flash latest OOS directly from TWRP and then flash magisk? And no data loss? Of course I'm rooted with bootloader unlocked.

Oh dear this process is getting harder because recently I was busy doing other things it sounds way harder it actually is. Isnt there a way I pay someone on this forum so that user help me do this. Like download stuff links and proper version and follow me up with it because i want to do this without messing things up!

a4abbas said:
Oh dear this process is getting harder because recently I was busy doing other things it sounds way harder it actually is. Isnt there a way I pay someone on this forum so that user help me do this. Like download stuff links and proper version and follow me up with it because i want to do this without messing things up!
Click to expand...
Click to collapse
It is indeed a tough job. This A/B partition has had a lot of people bootloop/soft bricked their phones.
However, you need not pay anybody anything. If you are on stock, I would've recommended you upgrading it via Oxygen updater (a 3rd party app on the play store) and then using the latest recoveries (TWRP 3.4) and flashing it via Fastboot mode.
It is super easy.

Is it possible to root the phone and still getting OTA updates ?

I want to root my phone due to its huge benefits but also at the same time I want to keep my OTAs
Is it possible even if I will install them manually (but the data remains with no wipe) ?
And if so, how can I do this and whats the best way?
Thanks in advance and sorry if the language was bad <3

Tsunaimy said:
I want to root my phone due to its huge benefits but also at the same time I want to keep my OTAs
Is it possible even if I will install them manually (but the data remains with no wipe) ?
And if so, how can I do this and whats the best way?
Thanks in advance and sorry if the language was bad <3
Click to expand...
Click to collapse
Yes it's possible with a little workaround, to temporarily switch to stock Recovery (from TWRP, if you had it installed) and to stock Boot (from the one patched by Magisk) during the OTA upgrade - OTA will fail if it finds not the stock images of Recovery and Boot
After the upgrade you just flash the new Boot patched by Magisk (and flash TWRP if you will)
Or you flash TWRP and flash Magisk from TWRP
Below is a post how I recently upgraded from QFJEUXM 12.0.2 to 12.0.3. Btw, I downloaded zip and initiated OTA manually because I didn't want to wait more days to be pushed for OTA, but that's just a small detail not important for the way how to do it:
https://forum.xda-developers.com/showpost.php?p=83791185&postcount=93
Ofc, all my data, apps, settings, and Magisk modules were preserved
Generally, in the Redmi K20/Mi 9T Guides section on XDA you can find (at least two) threads about how-to root, i.e. install Magisk
Those threads describe the way to install Magisk by installing Magisk Manager, patching the Boot image, then flashing it from Fastboot (I prefer that way).
In that case TWRP is not needed (but it can be also installled)
Threads and guides are maybe old (since MIUI 11) but it doesn't matter, it's always the same method (essentially the same as in my post I gave you the link above, its part about returning back to Magisk after the OTA upgrade)
If you follow those guides you must pay attention that you patch the boot.img for exactly that (new) stock MIUI you do have and that you now use new Magisk (not some old versions as in the guides)
Alternatively, you flash TWRP by Fastboot, then flash Magisk zip from TWRP and then you install Magisk Manager
All those methods are described in other threads and posts.
Anyway, you must first unlock the Bootloader, again there is thread with a guide, or just google for how to unlock Bootloader on Xiaomi
Btw, some custom TWRP versions and Orange Fox do have Advanced options for upgrading MIUI and to keep Magisk, but when I did it that way for upgrading from QFJEUXM 11.0.5 to 12.0.2, it made me Factory reset and I lost all my files on Internal memory (it was generally an issue for the others who upgraded from MIUI 11 to MIUI 12 by flashing OTA through custom recovery)
Hence now for upgrading to 12.0.3 I didn't want to risk and did it as above

zgfg said:
Yes it's possible with a little workaround, to temporarily switch to stock Recovery (from TWRP, if you had it installed) and to stock Boot (from the one patched by Magisk) during the OTA upgrade - OTA will fail if it finds not the stock images of Recovery and Boot
After the upgrade you just flash the new Boot patched by Magisk (and flash TWRP if you will)
Or you flash TWRP and flash Magisk from TWRP
Below is a post how I recently upgraded from QFJEUXM 12.0.2 to 12.0.3. Btw, I downloaded zip and initiated OTA manually because I didn't want to wait more days to be pushed for OTA, but that's just a small detail not important for the way how to do it:
https://forum.xda-developers.com/showpost.php?p=83791185&postcount=93
Ofc, all my data, apps, settings, and Magisk modules were preserved
Generally, in the Redmi K20/Mi 9T Guides section on XDA you can find (at least two) threads about how-to root, i.e. install Magisk
Those threads describe the way to install Magisk by installing Magisk Manager, patching the Boot image, then flashing it from Fastboot (I prefer that way).
In that case TWRP is not needed (but it can be also installled)
Threads and guides are maybe old (since MIUI 11) but it doesn't matter, it's always the same method (essentially the same as in my post I gave you the link above, its part about returning back to Magisk after the OTA upgrade)
If you follow those guides you must pay attention that you patch the boot.img for exactly that (new) stock MIUI you do have and that you now use new Magisk (not some old versions as in the guides)
Alternatively, you flash TWRP by Fastboot, then flash Magisk zip from TWRP and then you install Magisk Manager
All those methods are described in other threads and posts.
Anyway, you must first unlock the Bootloader, again there is thread with a guide, or just google for how to unlock Bootloader on Xiaomi
Btw, some custom TWRP versions and Orange Fox do have Advanced options for upgrading MIUI and to keep Magisk, but when I did it that way for upgrading from QFJEUXM 11.0.5 to 12.0.2, it made me Factory reset and I lost all my files on Internal memory (it was generally an issue for the others who upgraded from MIUI 11 to MIUI 12 by flashing OTA through custom recovery)
Hence now for upgrading to 12.0.3 I didn't want to risk and did it as above
Click to expand...
Click to collapse
I really appreciate your reply but I kinda don't know much info to understand most of what u said
My last time with root was about 3 years ago with king root on Mi A1 and I didn't care about updates then
so it's my very first time with magisk and TWRP and that stuff
Could u tell me what is the best method of u mentioned to keep my files and everything with no delete and also makes me able to upgrade Official ROM with no deletes
After this i'll start digging to learn but I want to know what should I dig for
Thanks bro

Tsunaimy said:
I really appreciate your reply but I kinda don't know much info to understand most of what u said
My last time with root was about 3 years ago with king root on Mi A1 and I didn't care about updates then
so it's my very first time with magisk and TWRP and that stuff
Could u tell me what is the best method of u mentioned to keep my files and everything with no delete and also makes me able to upgrade Official ROM with no deletes
After this i'll start digging to learn but I want to know what should I dig for
Thanks bro
Click to expand...
Click to collapse
Unlocking Bootloader usually takes to wait 7 days=168 hours, hence you have enough time to read?
Unlocking Bootloader:
https://c.mi.com/thread-1857937-1-1.html
Unlocking Bootloader: and Installing TWRP, OP post #1:
https://forum.xda-developers.com/mi-9t/how-to/guide-unlock-bootloader-flash-xiaomi-eu-t3952443
- for step 6, installing TWRP, use TWRP I'm giving you below
- instead of 7, execute this command:
>> fastboot oem reboot-recovery
- step 7, don't Format Data (unless you really go to install custom ROM, otherwise you don't need to)
- stop here for installing TWRP
Suggesting you to use this TWRP, 3.4.0.2 from OP post #1:
https://forum.xda-developers.com/mi-9t/how-to/recovery-unofficial-twrp-3-4-0-1-t4135159
- every time you boot to TWRP, you must type in your Android screen unlock pin, TWRP needs to be able to read/write to Data and Internal memory
Learn about using ADB and Fastboot:
https://www.makeuseof.com/tag/use-adb-fastboot-android/
- you can't do things with ADB that require root, but you can read
- similarly, fastboot commands mostly require unlocked Bootloader, but you can read
- google yourself
About installing Magisk, read in these threads:
https://forum.xda-developers.com/mi-9t/how-to/guide-easiest-to-root-twrp-t4000209
https://forum.xda-developers.com/mi-9t/how-to/root-k20-indian-rom-v10-3-6-0-twrp-t3958566
- if you have time, go through the whole threads, you will see variations
- don't worry if talking about MIUI 11, same applies for MIUI 12, you will just need to download your MIUI 12 recovery/zip firmware, will give you link below
- I'll give you below the link for the latest Magisk
MIUI firmwares, download, etc:
https://androidfilebox.com/tips/how-to-install-miui-recovery-rom/
https://androidfilebox.com/tips/how-to-install-miui-fastboot-rom/
https://xiaomiflashtool.com/tutorial/use-xiaomi-flash-tool
https://xiaomifirmwareupdater.com/miui/davinci/
https://codeexercise.com/xiaomi-all-android-mobile-secret-code-list/amp/
Various methods to extract stock Recovery, Boot, Persist and Persistbak partitions:
https://forum.xda-developers.com/mi-9t/how-to/root-k20-indian-rom-v10-3-6-0-twrp-t3958566
Magisk documentation and download:
https://github.com/topjohnwu/Magisk/blob/master/README.MD
- read the docs
- I would suggest you to use Canary (don't worry, Stable is far behind), hence you will only need to download Magisk Manager Canary (then follow XDA guides I gave you above)

zgfg said:
Unlocking Bootloader usually takes to wait 7 days=168 hours, hence you have enough time to read
Unlocking Bootloader:
https://c.mi.com/thread-1857937-1-1.html
Unlocking Bootloader: and Installing TWRP, OP post #1:
https://forum.xda-developers.com/mi-9t/how-to/guide-unlock-bootloader-flash-xiaomi-eu-t3952443
- for step 6, installing TWRP, use TWRP I'm giving you below
- instead of 7, execute this command:
>> fastboot oem reboot-recovery
- step 7, don't Format Data (unless you really go to install custom ROM, otherwise you don't need to)
- stop here for installing TWRP
Suggesting you to use this TWRP, 3.4.0.2 from OP post #1:
https://forum.xda-developers.com/mi-9t/how-to/recovery-unofficial-twrp-3-4-0-1-t4135159
- every time you boot to TWRP, you must type in your Android screen unlock pin, TWRP needs to be able to read/write to Data and Internal memory
Learn about using ADB and Fastboot:
https://www.makeuseof.com/tag/use-adb-fastboot-android/
- you can't do things with ADB that require root, but you can read
- similarly, fastboot commands mostly require unlocked Bootloader, but you can read
- google yourself
About installing Magisk, read in these threads:
https://forum.xda-developers.com/mi-9t/how-to/guide-easiest-to-root-twrp-t4000209
https://forum.xda-developers.com/mi-9t/how-to/root-k20-indian-rom-v10-3-6-0-twrp-t3958566
- if you have time, go through the whole threads, you will see variations
- don't worry if talking about MIUI 11, same applies for MIUI 12, you will just need to download your MIUI 12 recovery/zip firmware, will give you link below
- I'll give you below the link for the latest Magisk
MIUI firmwares, download, etc:
https://androidfilebox.com/tips/how-to-install-miui-recovery-rom/
https://androidfilebox.com/tips/how-to-install-miui-fastboot-rom/
https://xiaomiflashtool.com/tutorial/use-xiaomi-flash-tool
https://xiaomifirmwareupdater.com/miui/davinci/
https://codeexercise.com/xiaomi-all-android-mobile-secret-code-list/amp/
Various methods to extract stock Recovery, Boot, Persist and Persistbak partitions:
https://forum.xda-developers.com/mi-9t/how-to/root-k20-indian-rom-v10-3-6-0-twrp-t3958566
Magisk documentation and download:
https://github.com/topjohnwu/Magisk/blob/master/README.MD
- read the docs
- I would suggest you to use Canary (don't worry, Stable is far behind), hence you will only need to download Magisk Manager Canary (then follow XDA guides I gave you above)
Click to expand...
Click to collapse
bro I can`t really thank u enough for the effort
as I got it:
1- Unlock bootloader
2- Install TWRP (the version u provided)
3- Install Magisk (last link u provided) right?
Is there any step of those that is risky or unsafe that may brick the phone ?
PS: On mi unlock application it says all phone data will be erased !
what should I do ?

By unlocking Xiaomi phone you won't lose anything but previous user data stored in phone, unlike ASUS phone losts OTA permanentry.
So make a backup, also I recommend you first picking your secondaly phone, not your daily using one.

Tsunaimy said:
bro I can`t really thank u enough for the effort
as I got it:
1- Unlock bootloader
2- Install TWRP (the version u provided)
3- Install Magisk (last link u provided) right?
Is there any step of those that is risky or unsafe that may brick the phone ?
PS: On mi unlock application it says all phone data will be erased !
what should I do ?
Click to expand...
Click to collapse
As described, TWRP is optional, not needed for Magisk/root but it would be useful to have, so yes, install TWRP
Instructions for unlocking Bootloader say to do Backup. Copy photos and files from Internal memory to PC.
Export contacts to CVS file and also copy to PC.
Backup to Google your Google accounts, contacts, WhatsApp, etc.
Use Settings, Additional settings, Backup, and cooy to PC.
You can also use Settings, MIUI account to backup things
Installations of Magisk and TWRP will not erase data. Generally, they are not risky unless you make really stupid mistake like flashing TWRP img file to System partition instead of to Recovery partition and so - that's why you have instructions how to use Fastboot command to flash TWRP
It's more risky if you go to use e.g. MiFlash (you don't need for TWRP and Magisk), then people can screw up things and need authorized EDL support