How To Guide How to Update OOS 12 with Root
- Thread starter Z-Blade
- Start date
There are ways around it. OnePlus did update the source a couple of weeks ago however its only partly updated, it was not the full source and some of it was screwed. Eng.stk actually tried to make a kernel from it and he said about half of the functions works. Fingers crossed, OOS 13 will not have that problem. If not, I don't think I will ever buy a OnePlus again. I am keeping a close eye on the Nothing Phone (1).
I haven't heard anything about the Nothing phone? What's up with it?
I've been a bit disappointed with OP myself (loved by 6, but been less than thrilled with my 7 Pro and 9). Not much choice for a moddable phone in the states besides Pixels or a foreign phone that often lacks US carrier bands. And I have a hard time paying a lot for a phone I don't have full control over.
the root 
Did you find and downloaded the T-Mobile variant in the Oxygen Updater app? I am not too familiar with the T-Mobile version but I would assume it would work the same as long as you downloaded the correct image. I assume bootloader is unlocked and got root.
So where exactly you getting the installation issue? When trying to flash the image via the OP local update app?
No. T-Mobile firmware is only released OTA from T-Mobile. It comes OTA to the device. I restore images in Magisk and try to update via OTA and it says there's an installation issue and can't update. Also I flashed stock boot image I found on the forums but it still won't update. Then i thought maybe it won't update because bootloader is unlocked. I tried to lock the bootloader and I get an error telling me the image is destroyed and it can't boot, to flash stock image or contact customer service. Then i tried using msm tool to convert to global rom and can't figure out how to use the msm tool. It never recognizes my device. So I'm basically stuck on a rooted T-Mobile C.17 image. They just came out with C.19 today. I don't know how to get the device unrooted
There's a very helpful repo thread here on patched and stock boot.img files. With all versions.
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4Hi Everyone, there seems to be a lot of bits and pieces in regards to updating OOS 12 and Root so I thought I put together this guide on the way I do it while retaining Root. Unless something changes, this method should work for all future OOS 12 OTA updates.
Please read through all of the steps below before attempting. I will take no responsibility if something goes wrong, this works for me on my OnePlus 9 LE2115 and it should work for other OnePlus 9/Pro models.
1. Install Oxygen Updater app from the Play Store
2. Download the Full OTA.
3. Download and install the OP Local Update app ( apk).
4. Use the OP Local Update app to flash the Full OTA (you will lose root and custom recovery).
Optional - Retaining Root
DO NOT REBOOT if you want to keep Root
5. Open Magisk and in the Magisk section, tap 'Install'.
6. Select ' Install to Inactive Slot (After OTA)'.
7. Tap ' LET'S GO', let it run and then reboot.
After the system boots back up, check to make sure you have retained Root. You will not lose any data doing it this way.22
Dang you beat me to it!
I also updated to c48 following the directions in the OP with great success!
1
This guide is for updating OOS 12, i have not tested it from OOS 11 to 12. It looks like you just need to flash the patched boot.img again.
Also, just to make sure, you didn't reboot the phone after flashing the Full OTA? After flashing Full OTA, you need to go straight into Magisk as per instruction.
