Develop Bugs

Question Swapping firmwares between regions

Hi all, I notice that the global variant (AA) does not get full flashable updates, this could pose a problem for those of us who mess around with kernels root etc, I know of the update to inactive and keep root through OTA, but if something were to go wrong having the fallback to flash the latest full ROM seems like a good plan. Is it safe to switch to say, the indian version or EU version?
(This came about as I was on bluspark kernel which modifies the vendor_boot, and I needed to flash the vendor_boot from the .4.4 build)
Sorry if this is a dumb question, I'm coming back into the world of ROM flashing and modification after having used a Note 20 and then an iphone for the last few years.

You can switch from AA to BA (and back) without any issues. Mine was originally on AA/Global and I've been using BA/EU the last couple of versions for exactly the same reason. I read somewhere that there are a couple of minor differences due to GDPL, but otherwise they're identical. Not sure about DA/India version.

Thank you! That's excellent information. Might swap over to BA. I was able to push the vendor_boot without any effects right now, but who knows when the OTA comes for it lol

The EU version works on the Global AA version.
I switched because I want to be able to have a full download since I run Magisk and Gravity Box.
I also did this on my 7 Pro with no bad effects. There is some licensing and defaults that might need to be set but, I can't tell any functional difference between AA and BA firmware.

terlynn4 said:
You can switch from AA to BA (and back) without any issues. Mine was originally on AA/Global and I've been using BA/EU the last couple of versions for exactly the same reason. I read somewhere that there are a couple of minor differences due to GDPL, but otherwise they're identical. Not sure about DA/India version.
Click to expand...
Click to collapse
so I can simply flash 11.2.6.6 EU while on 11.2.4.4 AA and have no issues? (it should be noted that I did apply 11.2.6.6 incremental update following the standard guide but for some reason my system still reports 11.2.4.4)
it's so frustrating waiting for a full update on AA that I'm thinking of doing this. I'm on Verizon and wanted to make sure it would not cause problems first.

thirtythr33 said:
so I can simply flash 11.2.6.6 EU while on 11.2.4.4 AA and have no issues? (it should be noted that I did apply 11.2.6.6 incremental update following the standard guide but for some reason my system still reports 11.2.4.4)
it's so frustrating waiting for a full update on AA that I'm thinking of doing this. I'm on Verizon and wanted to make sure it would not cause problems first.
Click to expand...
Click to collapse
I haven't had any issues. I actually was on 11.2.7.7AA and used twrp to flash the zip for 11.2.6.6BA in both slots and regain my custom kernel and root. Been running for 2 days without issues. There's some weird anomalies that occur like it asking for a default search engine, but that was a one pop up kind of thing (Normally it should let you pick but when I clicked mine it just kinda went away)

thirtythr33 said:
so I can simply flash 11.2.6.6 EU while on 11.2.4.4 AA and have no issues? (it should be noted that I did apply 11.2.6.6 incremental update following the standard guide but for some reason my system still reports 11.2.4.4)
it's so frustrating waiting for a full update on AA that I'm thinking of doing this. I'm on Verizon and wanted to make sure it would not cause problems first.
Click to expand...
Click to collapse
Yes, that's exactly what I did except one version earlier. I was on 11.2.4.4 AA and got tired of waiting for a full update, so I downloaded 11.2.5.5 BA and installed via settings/local update. Now that twrp is out you could use that if you prefer.
Haunt3r said:
There's some weird anomalies that occur like it asking for a default search engine, but that was a one pop up kind of thing (Normally it should let you pick but when I clicked mine it just kinda went away)
Click to expand...
Click to collapse
Weird, I don't remember encountering that.

Question 12 stable ruined the network

Hi
I dont have signal on my cellular now after the updating...
There is a Temporary fix until the next update ?

I have the same problem. I can't even downgrade

New version 22.0.0.0 and no signal bug. Omfg

Having trouble since open beta 1 in receiving and placing calls, crazy what 1+ is releasing

12 sounds is shaky at best

12 stable managed to brick my phone almost.
Had to use all sort of tricks to get out of Crashdump Mode. But you can get out.
Anyway. It's a mess.
I have network but the whole OS feels SO unbaked. My phone is stuck in 60hz most of the time. Apps, functionality is missing. Things we've had in OOS. It's crap, I am sorry I'm going to say it like that.
This is a DOWNGRADE.
I wonder how 1+'s forums will look like after people storm it.
Anyway. You can downgrade with MSMTool, but it will wipe your data and you start from the stock OS.
Guess you can download latest OOS11, and Local Upgrade via System Update and disable update.
That's my plan at least.
You can also try using custom roms, but I am unsure about their stability (yet).

I'm still hoping they will release 12.0.0.1 this night

Jomsha said:
Hi
I dont have signal on my cellular now after the updating...
There is a Temporary fix until the next update ?
Click to expand...
Click to collapse
Same issues here
Indian version

Eslam.hanafy said:
Same issues here
Indian version
Click to expand...
Click to collapse
Ob2 did that already. No sim if 5g is turned on..Gonna root later, no big deal

Jomsha said:
Hi
I dont have signal on my cellular now after the updating...
There is a Temporary fix until the next update ?
Click to expand...
Click to collapse
try this method i posted in a thread, and let me know..
OOS 12.0.0 Stable Update Cellular Network Fix
Hi, As you may know most of us is having this issue after the OOS 12.0.0 Stable Update, Cellular Network lost, No Signal, Outgoing call, and SMS. The below method worked at least for me, let me know if worked with anyone of you please. Please...
forum.xda-developers.com

h8Aramex said:
12 stable managed to brick my phone almost.
Had to use all sort of tricks to get out of Crashdump Mode. But you can get out.
Anyway. It's a mess.
I have network but the whole OS feels SO unbaked. My phone is stuck in 60hz most of the time. Apps, functionality is missing. Things we've had in OOS. It's crap, I am sorry I'm going to say it like that.
This is a DOWNGRADE.
I wonder how 1+'s forums will look like after people storm it.
Anyway. You can downgrade with MSMTool, but it will wipe your data and you start from the stock OS.
Guess you can download latest OOS11, and Local Upgrade via System Update and disable update.
That's my plan at least.
You can also try using custom roms, but I am unsure about their stability (yet).
Click to expand...
Click to collapse
How did you get into edl mode running A12?

My network doesn't work on OOS12 stable for some reason. I spent 2 days flashing different oos12 builds (eu, global, indian) to try to see if the network comes back, tried literally everything but no luck
Very disappointed. Had to come back to OOS11. Everything works perfectly, except the fact that I'm not running the latest android version on my flagship 9 Pro.

Read my post here. And back through a few others.
jruizdesign said:
I was getting the same issue, but flashing a different variant of your current c.44 should do the trick.
Ex: I have a LE2127 (TMO), I converted with a11 to use LE2123(EU) software updates. When android 12 hit my phone wouldn't give me data on the 2123 update, so I had to download the LE2125(global/NA) update and flash using the the system update app that was so generously given in the following post:
Post in thread '[TMO] 9 PRO MODEM RETENTION' https://forum.xda-developers.com/t/tmo-9-pro-modem-retention.4292445/post-86328243
I don't know what software or model your phone is now, so I am NOT suggesting you switch if you are not already on 2123 or 2125. Those two are interchangeable without problem so it should be fine
Click to expand...
Click to collapse
I don't know anything about the Indian variant so I'm not sure if the same fixed will work.
But I can tell you I have tried every msm tool and almost every possible variant an no matter what goes wrong there has been a fix here in the these forums already.
Currently running lastest c.44 global LE2125 A12 on my TMo LE2127 model device with ZERO bugs so far. Data works flawlessly

khanboy619 said:
My network doesn't work on OOS12 stable for some reason. I spent 2 days flashing different oos12 builds (eu, global, indian) to try to see if the network comes back, tried literally everything but no luck
Very disappointed. Had to come back to OOS11. Everything works perfectly, except the fact that I'm not running the latest android version on my flagship 9 Pro.
Click to expand...
Click to collapse
Did you read the data retention thread and msm using the given tool in that thread ONLY? If you use that msm tool, the take the local update to 11.2.9.9 then update the your variant of C44 you should have no issues.

jruizdesign said:
Did you read the data retention thread and msm using the given tool in that thread ONLY? If you use that msm tool, the take the local update to 11.2.9.9 then update the your variant of C44 you should have no issues.
Click to expand...
Click to collapse
Are you sure about this?? Because I flashed OOS12 by first flashing OS 11.2.8.8 through MSM tool and then updating to android 12.
Do you think flashing 11.2.9.9 will actually work, because I'll have to through the hastle of downgrading and then updating again. (As I'm running 11.2.10.10 atm)
The help is much appreciated.

h8Aramex said:
12 stable managed to brick my phone almost.
Had to use all sort of tricks to get out of Crashdump Mode. But you can get out.
Anyway. It's a mess.
I have network but the whole OS feels SO unbaked. My phone is stuck in 60hz most of the time. Apps, functionality is missing. Things we've had in OOS. It's crap, I am sorry I'm going to say it like that.
This is a DOWNGRADE.
I wonder how 1+'s forums will look like after people storm it.
Anyway. You can downgrade with MSMTool, but it will wipe your data and you start from the stock OS.
Guess you can download latest OOS11, and Local Upgrade via System Update and disable update.
That's my plan at least.
You can also try using custom roms, but I am unsure about their stability (yet).
Click to expand...
Click to collapse
The easiest way to crashdump after this update is trying to flash your modem files like you would of you of on a11.

jruizdesign said:
The easiest way to crashdump after this update is trying to flash your modem files like you would of you of on a11. Easy fix with msm to stock and try again
Click to expand...
Click to collapse

khanboy619 said:
Are you sure about this?? Because I flashed OOS12 by first flashing OS 11.2.8.8 through MSM tool and then updating to android 12.
Do you think flashing 11.2.9.9 will actually work, because I'll have to through the hastle of downgrading and then updating again. (As I'm running 11.2.10.10 atm)
The help is much appreciated.
Click to expand...
Click to collapse
No 11.2.10.10 you get the same result no need to downgrade.

Amd4life said:
How did you get into edl mode running A12?
Click to expand...
Click to collapse
Same way you would in android 11.
Make sure the phone is completely off. Hold volume up and volume down buttons, and plug it in.
Make sure you already have the msm tool fully opened and ready to click enum.
As soon as you plug it in it should say ok ok in the tool, click enum then start.
I stress that point to do it quickly because it will fail with different errors if it's not done quick enough after the device is plugged in.

Question Cannot update to C.47

Hello everyone,
I have a problem. I tried installing Nameless ROM on my OnePlus 9 Pro with no success. After that I reflashed my phone using MsmTool. Than I've updated it do 11.2.10.10 and later to C.47. But when I installed C.47 phone rebooted to recovery and when I selected reboot It wouldn't boot. Don't know what I'm doing wrong. My bootloader is locked.

Which phone version do you have?

luckylui said:
Which phone version do you have?
Click to expand...
Click to collapse
You mean software version or phone model?
Right now I'm on 11.2.10.10
My phone model is LE2120

skrubxgt said:
You mean software version or phone model?
Right now I'm on 11.2.10.10
My phone model is LE2120
Click to expand...
Click to collapse
Phone model.
So, I'd try it this way..
Since you are already on 11.2.10.10, I'd unlock the bootloader. (It'll wipe the device)
Download Oxygen Updater and download the stock versions through their.
Local update through your phone settings.
Once you are on A12 I'd follow the steps to installing Nameless.
My phone model is 2127 and I'm running Pixel Experience with no issues.

luckylui said:
Phone model.
So, I'd try it this way..
Since you are already on 11.2.10.10, I'd unlock the bootloader. (It'll wipe the device)
Download Oxygen Updater and download the stock versions through their.
Local update through your phone settings.
Once you are on A12 I'd follow the steps to installing Nameless.
My phone model is 2127 and I'm running Pixel Experience with no issues.
Click to expand...
Click to collapse
Oxygen Updater shows C.47 is available, should I install it?

Yes, download it and local update through the phone settings.
Keep in mind you will need to unlock your bootloader in order to flash a custom Rom.

luckylui said:
Yes, download it and local update through the phone settings.
Keep in mind you will need to unlock your bootloader in order to flash a custom Rom.
Click to expand...
Click to collapse
Well it didn't work, local update wouldn't allow me to install it.

skrubxgt said:
Well it didn't work, local update wouldn't allow me to install it.
Click to expand...
Click to collapse
I wonder if you need to unlock the bootloader and root? I can't test it out unfortunately since I'm on the Pixel Rom :/

luckylui said:
I wonder if you need to unlock the bootloader and root? I can't test it out unfortunately since I'm on the Pixel Rom :/
Click to expand...
Click to collapse
I wonder why I can't install official update, when I installed C.47 it just bootloops. Tried installing Global, India and EU builds but after all it is the same situation.

skrubxgt said:
I wonder why I can't install official update, when I installed C.47 it just bootloops. Tried installing Global, India and EU builds but after all it is the same situation.
Click to expand...
Click to collapse
Yeah, that is very weird.
I wonder if something with your phones partitions got messed up, but I would figure doing an MSM restoration would bring everything back.

luckylui said:
Yeah, that is very weird.
I wonder if something with your phones partitions got messed up, but I would figure doing an MSM restoration would bring everything back.
Click to expand...
Click to collapse
Tried restoring it using MsmTool, still nothing

I have exactly the same problem, except my device is a LE2123. Running the stock version that came out of the box. 11.2.10.10.LE15BA. down load and install seem to be ok, but at the point to reboot the device loop several times and then recovers to 11.2.10.10....

If you guys are going custom Rom, I would just go ahead and install the custom Rom. Looks like the firmware will carry over once you transition. Maybe that'll work out better than updating to the next available stock firmware.

luckylui said:
If you guys are going custom Rom, I would just go ahead and install the custom Rom. Looks like the firmware will carry over once you transition. Maybe that'll work out better than updating to the next available stock firmware.
Click to expand...
Click to collapse
Yea, if you want a custom ROM, just do it and follow the instructions to the letter....

TheGhost1951 said:
Yea, if you want a custom ROM, just do it and follow the instructions to the letter....
Click to expand...
Click to collapse
I have the 2127 Tmo model and was on C.19 version. Downloaded and installed Pixel Experience Rom which is C.62 and it works fine. But, I have heard C.19 is pretty much C.62 and Pixel Rom you can install it on any version.. not sure about Nameless though. Worst case scenario is you would have to MSM back (which I know is a pain) but, I guess gotta try whatever works.

luckylui said:
I have the 2127 Tmo model and was on C.19 version. Downloaded and installed Pixel Experience Rom which is C.62 and it works fine. But, I have heard C.19 is pretty much C.62 and Pixel Rom you can install it on any version.. not sure about Nameless though. Worst case scenario is you would have to MSM back (which I know is a pain) but, I guess gotta try whatever works.
Click to expand...
Click to collapse
Hi my friend, I am on TMO with Model LE2127 running stock 11.2.9.9 and happy as a Lark. I got rid of bloatware, full root with partitions mounted as R/W, custom bootanimation and custom systemwide font. With just Magisk Root, you are not fully rooted. And stock OOS 12 is squirrelly anyway. The latest is not always the greatest.....hope you are having a great day! TheGhost!

To me, the main reason for root on any smartphone is to be able to customize it anyway you like without having to go and find this module or that module for Magisk. I tried the custom font module for Magisk and it was not systemwide. The way I am rooted, even the keys on the keyboard are changed to the custom font I have installed....if you don't have complete control of your phone, you are not truly rooted!

TheGhost1951 said:
Hi my friend, I am on TMO with Model LE2127 running stock 11.2.9.9 and happy as a Lark. I got rid of bloatware, full root with partitions mounted as R/W, custom bootanimation and custom systemwide font. With just Magisk Root, you are not fully rooted. And stock OOS 12 is squirrelly anyway. The latest is not always the greatest.....hope you are having a great day! TheGhost!
Click to expand...
Click to collapse
Hello, TheGhost! Glad to see an old timer on the forums from many moons ago! We've seen it all and still learning till this day as technology develops. Totally agree with ya and it sure does make a difference once you take full control of your phone. That's why Android will always be my go to! Cheers to ya!!

luckylui said:
Hello, TheGhost! Glad to see an old timer on the forums from many moons ago! We've seen it all and still learning till this day as technology develops. Totally agree with ya and it sure does make a difference once you take full control of your phone. That's why Android will always be my go to! Cheers to ya!!
Click to expand...
Click to collapse
You bet my friend,

I had a similar problem on my 9 with the C.48 ROM. I ended up MSM back to stock, unlocked the bootloader, then took the OTAs and it downloaded the full ones. All those flashed fine, then it got stuck at C.60 and said I was up to date so I had to grab the C.62 full India OTA and flashed that and now I'm back up to date.
I'm assuming based on the version and model that you're running the EU ROM? If so, grab Oxygen Updater and download the full OTA of C.62 from it (turn on advanced setting so you can select incompatible images, select EU full). Take that and copy to PC. Download Fastboot Enhance, reboot to fastbootd (adb reboot fastboot). Double click when it shows your device, go to partitions page. Search cow and select and delete each one you find there individually (you just keep searching cow after you delete each one, no idea why the program wasn't designed to just let you select all of them at once and delete them, maybe it's a safety design for dumb people). Then click flash payload.bin and choose the C.62 zip file you downloaded and it will flash to your phone. Reboot to system and you should be good to go.
Fastboot Enhance doesn't have all the checks that the regular updater does so as long as it's a full OTA and it's not corrupted, it should flash fine.
If you screw anything up, it's time to MSM again. Annoying but that's how it goes with these frustrating OnePlus devices.

Question Oneplus 9 pro locate le2125 stock rom

before I root my phone I wanted to ensure I had a good stock rom to load in the event of an issue.
I'm currently running Oxygen OS 11.2LE15AA.
I can't find this exact version and I understand the AA versions are little different than the TMO versions. I believe this is the "global" version. There are some 11.2.xxx.AA versions, but not this specific one.
I investigated getting the image directly off the phone, but it appears you either need to have a rooted phone, or possibly installing TWRP (or other) and creating a backup. Then extract the image files from the backup.
I've rooted phones in the past, the last being my oneplus 3t. things have changed a lot since then. I've been studying up and want to make sure I get this right.
I really would like to have a golden (and trusted) image to fall back on.
Any insights are appreciated.
btw. I have two 9 pro's. my le2125 (cracked screen) i'm testing on, and a brand new le2127 (11.2.44.LE5ACB) I'll root after confirming I can root and restore these. The later is the TMO version.
I was planning on the Magisk root option. Looks like you can do it now without TWRP. I just want to debloat and Xposed. Magisk looks like it might have some interesting options I'll explore. For now I just want to locate a stock rom for 11.2LE15AA.
Thanks in advance.

ericaiken said:
before I root my phone I wanted to ensure I had a good stock rom to load in the event of an issue.
I'm currently running Oxygen OS 11.2LE15AA.
I can't find this exact version and I understand the AA versions are little different than the TMO versions. I believe this is the "global" version. There are some 11.2.xxx.AA versions, but not this specific one.
I investigated getting the image directly off the phone, but it appears you either need to have a rooted phone, or possibly installing TWRP (or other) and creating a backup. Then extract the image files from the backup.
I've rooted phones in the past, the last being my oneplus 3t. things have changed a lot since then. I've been studying up and want to make sure I get this right.
I really would like to have a golden (and trusted) image to fall back on.
Any insights are appreciated.
btw. I have two 9 pro's. my le2125 (cracked screen) i'm testing on, and a brand new le2127 (11.2.44.LE5ACB) I'll root after confirming I can root and restore these. The later is the TMO version.
I was planning on the Magisk root option. Looks like you can do it now without TWRP. I just want to debloat and Xposed. Magisk looks like it might have some interesting options I'll explore. For now I just want to locate a stock rom for 11.2LE15AA.
Thanks in advance.
Click to expand...
Click to collapse
here
OP9Pro - Repository of MSM Unbrick Tools (TMO, EU, GLO, IN)
By using these tools, you accept full responsibility for your actions. Your warranty is void should you run any of these utilities without OnePlus support present. I am not responsible for bricks, fires, nuclear war, etc. If you modified any...
forum.xda-developers.com

ericaiken said:
before I root my phone I wanted to ensure I had a good stock rom to load in the event of an issue.
I'm currently running Oxygen OS 11.2LE15AA.
I can't find this exact version and I understand the AA versions are little different than the TMO versions. I believe this is the "global" version. There are some 11.2.xxx.AA versions, but not this specific one.
I investigated getting the image directly off the phone, but it appears you either need to have a rooted phone, or possibly installing TWRP (or other) and creating a backup. Then extract the image files from the backup.
I've rooted phones in the past, the last being my oneplus 3t. things have changed a lot since then. I've been studying up and want to make sure I get this right.
I really would like to have a golden (and trusted) image to fall back on.
Any insights are appreciated.
btw. I have two 9 pro's. my le2125 (cracked screen) i'm testing on, and a brand new le2127 (11.2.44.LE5ACB) I'll root after confirming I can root and restore these. The later is the TMO version.
I was planning on the Magisk root option. Looks like you can do it now without TWRP. I just want to debloat and Xposed. Magisk looks like it might have some interesting options I'll explore. For now I just want to locate a stock rom for 11.2LE15AA.
Thanks in advance.
Click to expand...
Click to collapse
Apart from the MSM Tools linked by the previous poster, you have all the available stock ROMs listed HERE. Check whether you can find yours there.

Do not use the Indian MSM tool what ever you do. What 11.2.x.x version do you have....?

TheGhost1951 said:
Do not use the Indian MSM tool what ever you do. What 11.2.x.x version do you have....?
Click to expand...
Click to collapse
I have Oxygen OS 11.2LE15AA

TNSMANI said:
Apart from the MSM Tools linked by the previous poster, you have all the available stock ROMs listed HERE. Check whether you can find yours there.
Click to expand...
Click to collapse
thx. per that link
Global devices (LE2125) with build tag LE15AA zips use Google OTA servers, thereby making it impossible to capture full OTA zips under normal circumstances but Android major updates. However, should they be obtained or be posted on support website, they will be added.
and the website only has the latest 11.2.10.10.LE15AA
guess i'm screwed on getting a golden image. This really opens a can of worms for me. LE15AA are they really that special? Is there a know good sub version. I've seen 11.2.1.1.LE15AA images out there.

ericaiken said:
thx. per that link
Global devices (LE2125) with build tag LE15AA zips use Google OTA servers, thereby making it impossible to capture full OTA zips under normal circumstances but Android major updates. However, should they be obtained or be posted on support website, they will be added.
and the website only has the latest 11.2.10.10.LE15AA
guess i'm screwed on getting a golden image. This really opens a can of worms for me. LE15AA are they really that special? Is there a know good sub version. I've seen 11.2.1.1.LE15AA images out there.
Click to expand...
Click to collapse
It also goes on to say
LE2127 units are T-Mobile units running their own version of OxygenOS labelled LE5ACB and lack local update option in Settings --> System --> System Updates and are therefore not supported.
Which is my new replacement, so what does "not supported" mean for rooting it

This is my setup on LE2127 TMO variant. Firmware 11.2.9.9 ( I will stay on this for now because of some issues on A12), unlocked bootloader, rooted with Magisk, TWRP installed and a special script flashed which mounts partitions as R/W. I have complete control of my phone and that is what I expect when it is in fact "my phone" unlike a Galaxy phone that bootloader is unable to be unlocked..... As for a golden firmware to fallback on, are you wanting Global or TMO?

Question What is the simplest way to convert LE2127 (US T-Mobile) to non-TMO image?

I read multiple threads about converting LE2127 to EU/NA, and there appears to be many ways to do it, but I don't understand why I would take one way or another. And which steps are required and in what circumstances. All guides cover "how" but barely ever "why" or "when". Therefore, please help me here, and help in my very specific case:
Circumstances:
SIM is already unlocked
I will have unlock.bin in a couple days
I'm on LE2127_11_C.21
I want the latest OnePlus-provided OxygenOS
Given these circumstances:
What is the simplest way to convert LE2127 (US T-Mobile) to non-TMO image with Magisk root?
Does it matter whether I go for LE2123 / EU image, or LE2125 / global image? If it does, what are the consequences of going for one or the other?

Nowaker said:
I read multiple threads about converting LE2127 to EU/NA, and there appears to be many ways to do it, but I don't understand why I would take one way or another. And which steps are required and in what circumstances. All guides cover "how" but barely ever "why" or "when". Therefore, please help me here, and help in my very specific case:
Circumstances:
SIM is already unlocked
I will have unlock.bin in a couple days
I'm on LE2127_11_C.21
I want the latest OnePlus-provided OxygenOS
Given these circumstances:
What is the simplest way to convert LE2127 (US T-Mobile) to non-TMO image with Magisk root?
Does it matter whether I go for LE2123 / EU image, or LE2125 / global image? If it does, what are the consequences of going for one or the other?
Click to expand...
Click to collapse
Sim unlock is not a requirement for this device but it's good you have it already.
Using the Tmo->Eu conversion bypasses the need for unlock.bin but again, it's good that you have that coming as well.
The simplest way is to use the Tmo->Eu MSM conversion tool and then Oxygen Updater over to global if you want to do that instead of stay on Eu. Either way, using the conversion tool is the way.
From my current understanding, the only real functional difference from Eu vs Global is the latest update speed. I've read that Global was getting the latest updates first. Others report they're available on Eu also and the app was caching old results. I can't be sure on that as I stayed on Eu and I stay on Android 11 (11.2.10.10) but that's what I've read. Hopefully someone else will have additional information on any technical differences. I've been fine using Eu on Tmo/USA.
Since you're interested in going to the latest version, Oos13, you won't need to flash the modem back in as that was fixed for oos13.
You should definitely backup your efs and modemst1/2 partitions before you do anything else.
Open MSM, press F8, select the partitions you want to backup, password is "oneplus". Press read back and they will be stored in C:\ root.
It is advised to unlock bootloader on Android 11 before updating to any other version. I unlocked bootloader and rooted with Magisk on A11 right away. Using the MSM tool to readback boot_a and adb push it onto device. Then having magisk apk patch that boot_a. In my case, by unlocking bootloader and then taking OTA, I retain L1 drm. If I take OTA and then unlock bootloader, I lose L1 drm.
Temp unroot, take the OTA, magisk install to inactive slot, repeat until you're at the firmware you want. Check replies at the back end of this thread: https://forum.xda-developers.com/t/...7-to-eu-via-msm-no-unlock-bin-needed.4272837/
for which OTA route others are taking to get to oos13

To convert your physical T-Mobile sim to an e sim
Go to the home screen. to open the menu, swipe up on the screen.
scroll to the right, choose settings
scroll down choose connections.
choose a sim card manager.
choose sim 1.
choose convert to eSIM
chooses OK.

Thank you @Appreciative for explaining this. I'm very appreciative of your help.
Global/EU thing is now clear to me. Speaking of unlocking the bootloader, I have more to ask.
Appreciative said:
It is advised to unlock bootloader on Android 11 before updating to any other version.
Click to expand...
Click to collapse
So I'm already on LE2127_11_C.21 which is the latest version available to me. I'm actually unsure what OxygenOS version it is. "About device" says Android 12, security update November 5, 2022. There is no indication what OOS version it is anywhere in the settings. Is it OOS 12 or OOS 13?
Anyway, I upgraded all the way to LE2127_11_C.21 after I received the phone. Should I downgrade to the original OOS11 ? And how, given full OTA images for LE2127 are nowhere to be found?
Should I follow the instructions in OP9Pro - Repository of MSM Unbrick Tools (TMO, EU, GLO, IN)? Like I said before, all guides cover "how" but barely ever "why" or "when", and that one is no different.
Appreciative said:
In my case, by unlocking bootloader and then taking OTA, I retain L1 drm. If I take OTA and then unlock bootloader, I lose L1 drm.
Click to expand...
Click to collapse
Why is it important? What are the consequences of losing?

Nowaker said:
Thank you @Appreciative for explaining this. I'm very appreciative of your help.
Global/EU thing is now clear to me. Speaking of unlocking the bootloader, I have more to ask.
So I'm already on LE2127_11_C.21 which is the latest version available to me. I'm actually unsure what OxygenOS version it is. "About device" says Android 12, security update November 5, 2022. There is no indication what OOS version it is anywhere in the settings. Is it OOS 12 or OOS 13?
Anyway, I upgraded all the way to LE2127_11_C.21 after I received the phone. Should I downgrade to the original OOS11 ? And how, given full OTA images for LE2127 are nowhere to be found?
Should I follow the instructions in OP9Pro - Repository of MSM Unbrick Tools (TMO, EU, GLO, IN)? Like I said before, all guides cover "how" but barely ever "why" or "when", and that one is no different.
Why is it important? What are the consequences of losing?
Click to expand...
Click to collapse
Android 12 shipped by OnePlus is oos12. Same for 11/13 and any other. All oos12 is android 12 but not all android 12 is oos. For all OnePlus devices, it's OOS (or ColorOS).
(To make this more confusing, OnePlus for some reason, labels the oos12 packages as _11_C.xx but it's not Android 11. That is why most of the forum mentions them by C.xx and for oos13, F.xx)
You are on oos12.
Follow the conversion thread, you won't need that thread you posted unless you brick and want to go back to stock Tmo firmware to start over again clean. The one I posted is the one you'll use.
When you use the MSM tool, you'll automatically go back to Android 11 early version. It's advised to unlock bootloader from Android 11 for two reasons. One is what I mentioned about my situation. I lose L1 drm by unlocking right after the msm conversion tool but I regain L1 drm after taking the OTA to 11.2.10.10. The other reason is for people without their unlock token. You've already submitted to OnePlus website so this may not affect you. For those who converted to Eu to bypass the unlock.bin token from OnePlus, they NEED to unlock the bootloader on A11 because the bypass is gone/fixed in Android 12/13. They require the unlock.bin if they didn't unlock bootloader in A11.
After you do the MSM Eu->Tmo tool (https://forum.xda-developers.com/t/...7-to-eu-via-msm-no-unlock-bin-needed.4272837/), you will be on Android 11, OOS11, 11.2.3.3 - You can unlock the bootloader there without the token or wait for your token and unlock it later.
After you MSM, you'll start in a clean Android/OOS 11 state. Then you get oxygen updater from play store and update to oos12 and then oos13.
Looking in the back pages of the thread above, you will see which route people take to get there. I BELIEVE it is to take the local upgrade to C.65 (oos12) and then F.16 (oos13).
Losing L1 drm is typically from losing Device Certification. When that happens, google pay, Netflix, Disney+ and other apps that require certification may not work at all or diminished.
If you get to oos13 and have lost L1 drm, do not panic, you have some options to get it back since you'll be rooting along the way. The standard approach is using USNF (universal safetynet fix) module in Magisk. There is a thread a few posts down that's labeled wrong, it's labeled as a question but it's a how-to GooglePay/cts passing (https://forum.xda-developers.com/t/oos13-gpay-cts-profile-fix-for-unlocked-bootloader.4525423/)

Thanks again, @Appreciative!
Appreciative said:
When you use the MSM tool, you'll automatically go back to Android 11 early version. It's advised to unlock bootloader from Android 11 for two reasons.
Click to expand...
Click to collapse
So by you saying that, it means I can use the MSM tool you linked without having to unlock the bootloader beforehand. Is that correct?
Appreciative said:
After you MSM, you'll start in a clean Android/OOS 11 state. Then you get oxygen updater from play store and update to oos12 and then oos13.
Click to expand...
Click to collapse
And then I should be able to pick NA or EU, and it won't really matter, right? Since after I MSM the phone, it identifies itself as LE2125 while previously it was LE2127?
Appreciative said:
Losing L1 drm is typically losing Device Certification. When that happens, google pay, Netflix, Disney+ and other apps that require certification may not work at all or diminished.
Click to expand...
Click to collapse
Ah. The SafetyNet, ctsProfile, and all that stuff. I didn't know it also goes by L1 DRM name. Thanks for clarifying.
Appreciative said:
Temp unroot, take the OTA, magisk install to inactive slot, repeat until you're at the firmware you want. Check replies at the back end of this thread: https://forum.xda-developers.com/t/...7-to-eu-via-msm-no-unlock-bin-needed.4272837/
Click to expand...
Click to collapse
I think everything is clear to me to the point of MSMing the phone, which turns it into LE2123 (EU). Can you confirm these are the steps to get there?
1. Starting from LE2127_11_C.21 (current firmware - OOS12 / Android 12 / T-Mobile)
2. Use the MSM TMo->EU conversion tool which downgrades the phone to Android 11, OOS11, 11.2.3.3, identified as LE2123 (EU)
3. Unlock bootloader.
But now what? When and how exactly do I do things with Magisk? I did the extract-boot.img-patch-and-flash process multiple times on OnePlus 8, OnePlus 8T, OnePlus 9 Pro (Global). It's easy. But it appears things get tricky here on OP9P LE2127 T-Mobile version, so I'd like some clarification.
Am I supposed to patch boot.img with Magisk App? But what do I extract the boot.img from at this stage?

Nowaker said:
Thanks again, @Appreciative!
So by you saying that, it means I can use the MSM tool you linked without having to unlock the bootloader beforehand. Is that correct?
And then I should be able to pick NA or EU, and it won't really matter, right? Since after I MSM the phone, it identifies itself as LE2125 while previously it was LE2127?
Ah. The SafetyNet, ctsProfile, and all that stuff. I didn't know it also goes by L1 DRM name. Thanks for clarifying.
I think everything is clear to me to the point of MSMing the phone, which turns it into LE2123 (EU). Can you confirm these are the steps to get there?
1. Starting from LE2127_11_C.21 (current firmware - OOS12 / Android 12 / T-Mobile)
2. Use the MSM TMo->EU conversion tool which downgrades the phone to Android 11, OOS11, 11.2.3.3, identified as LE2123 (EU)
3. Unlock bootloader.
But now what? When and how exactly do I do things with Magisk? I did the extract-boot.img-patch-and-flash process multiple times on OnePlus 8, OnePlus 8T, OnePlus 9 Pro (Global). It's easy. But it appears things get tricky here on OP9P LE2127 T-Mobile version, so I'd like some clarification.
Am I supposed to patch boot.img with Magisk App? But what do I extract the boot.img from at this stage?
Click to expand...
Click to collapse
To be clear, L1 drm is a separate thing from Safetynet and CTS. L1 dropping to L3 is a result of "insecure device". When you unlock the bootloader, the device is detected as modified. That state fails safetynet. A byproduct of that is DRM drops down to L3. L3 means apps like Netflix will only work in SD quality, if at all. Some apps won't even open or show up in play store when device is not certified. L1/L3/Safetynet/cts aren't exactly interchangeable even tho I kinda made it sound that way. Just in the context that when you are not passing safetynet, a byproduct is you lose L1 drm, because of the device certification not passing.
Yes, you can use the MSM conversion tool without the bootloader being unlocked.
MSM Tmo->Eu conversion tool.
Unlock bootloader.
Download Oxygen Updater in play store.
Root with Magisk.
I pull my boot image using the MSM tool readback as mentioned above, after the conversion and before I take the OTA.
MSM->F8->boot_a and see it in C:
Then I adb push C:\boot_a.img to /sdcard/
Magisk patch the just-pushed boot image.
Temp boot that boot image with:
fastboot boot boot magisk-patched-boot.img
That will temporarily boot you with root. You have to finish the magisk install from here.
Then I reboot and ensure phone is rooted properly.
I download the OTA and let it install. Do not let it reboot after the OTA is finished. You need to go back to magisk and temp unroot by pressing "uninstall magisk" and choose "restore images". Then choose the option for 'flash to other slot OTA'.
This information is based on me going from 11 early to 11 later. There may be some changes for 12/13 that someone else can chime in on.
Alternatively, you can wait to root until later.
Things really aren't tricky on this model. It's actually pretty smooth with the conversion tool. * At least for 11 in my experience. Someone else will have to help you more for 12->13 as I haven't done that. My oxygen updater currently shows release version LE2123_11_F.72 (Eu) or LE2125_11_F.17 (global)
Both of which are oos13. I don't know if it's possible to jump from 11 to 13. I've only read reports of going to 12 and then 13 but I don't read much of 12/13 as I'm staying on 11

Appreciative said:
To be clear, L1 drm is a separate thing from Safetynet and CTS. L1 dropping to L3 is a result of "insecure device". When you unlock the bootloader, the device is detected as modified. That state fails safetynet. A byproduct of that is DRM drops down to L3. L3 means apps like Netflix will only work in SD quality, if at all. Some apps won't even open or show up in play store when device is not certified. L1/L3/Safetynet/cts aren't exactly interchangeable even tho I kinda made it sound that way. Just in the context that when you are not passing safetynet, a byproduct is you lose L1 drm, because of the device certification not passing.
Click to expand...
Click to collapse
OK, cool. So after following the guide, I still should look "secure" for everything, right? On my old OnePlus 9 Pro LE2125, I'm passing SafetyNet, and my GPay works - even though I have Magisk and root. (And use my old phone via `scrcpy` because I broke its display lol)
Appreciative said:
I pull my boot image using the MSM tool readback as mentioned above, after the conversion and before I take the OTA.
MSM->F8->boot_a and see it in C:
Then I adb push C:\boot_a.img to /sdcard/
Magisk patch the just-pushed boot image.
Temp boot that boot image with:
fastboot boot boot magisk-patched-boot.img
That will temporarily boot you with root. You have to finish the magisk install from here.
Then I reboot and ensure phone is rooted properly.
I download the OTA and let it install. Do not let it reboot after the OTA is finished. You need to go back to magisk and temp unroot by pressing "uninstall magisk" and choose "restore images". Then choose the option for 'flash to other slot OTA'.
Click to expand...
Click to collapse
OK, sounds good. Thank you.
Just to clarify: by saying "download the OTA", do you mean using the system-provided update tool, or are we talking about downloading LE2125_11_F.16 from Oxygen Updater?
You also made me learn about "install to inactive slot" - https://topjohnwu.github.io/Magisk/ota.html. I wasn't aware it existed. I applied any OTA updates in the past manually. Download full OTA, extract boot.img, patch it with Magisk, flash OTA and patched boot. Like a fresh install. Also explains why I barely ever upgraded.

Nowaker said:
OK, cool. So after following the guide, I still should look "secure" for everything, right? On my old OnePlus 9 Pro LE2125, I'm passing SafetyNet, and my GPay works - even though I have Magisk and root. (And use my old phone via `scrcpy` because I broke its display lol)
OK, sounds good. Thank you.
Just to clarify: by saying "download the OTA", do you mean using the system-provided update tool, or are we talking about downloading LE2125_11_F.16 from Oxygen Updater?
You also made me learn about "install to inactive slot" - https://topjohnwu.github.io/Magisk/ota.html. I wasn't aware it existed. I applied any OTA updates in the past manually. Download full OTA, extract boot.img, patch it with Magisk, flash OTA and patched boot. Like a fresh install. Also explains why I barely ever upgraded.
Click to expand...
Click to collapse
Well that's where we can both be unsure. I've read that you should go to 12 (c.xx) and then 13 (f.xx) using Oxygen Updater. However, I used the built in system updater ota to get from 11.2.3.3 to 11.2.10.10 myself. I believe you are supposed to use the oxygen updater apk from play store to get to 13 but for that ... someone else will have to clarify exactly which way to get to 12/13. It is for sure covered in this forum, I just have no reason to remember it as I'm staying on 11.
Even if you decide to root later instead of earlier on and Magisk uninstall each time, you can use MSM to readback the boot image and send it over for patching. It's not a big hassle.
After the conversion, you won't have mobile service until you either get to oos13 or flash the modem (modem_a/b not modemst1/2) back in . Don't panic if you see no signal right after Eu conversion is my point

OK, cool. So after following the guide, I still should look "secure" for everything, right?
Click to expand...
Click to collapse
Either way, you should install USNF magisk module and clear cache of google apps to get or stay device certified. That is outlined in the thread I linked above for oos13.
This device has a lot of pros. We can have root and unlocked bootloader, pass safetynet and retain L1 drm, doesn't require sim unlock to unlock bootloader (only needs minor bypass for the OEM unlocking the toggle), unlock.bin bypass with Crazazn's conversion tool, ability to flash over to other firmware regions, and good custom rom and mod support

Appreciative said:
Either way, you should install USNF magisk module and clear cache of google apps to get or stay device certified.
Click to expand...
Click to collapse
For the record - my current One Plus 9 Pro LE2125 (not the new one LE2127 I just purchased) has Android 11, OOS 11.2.7.7.LE15AA. It's rooted and passes all SafetyNet and stuff, and I don't have any extra Magisk modules.
Are you saying it's upgrading to newer versions of Android / OxygenOS that enhances security, and requires us to use extra Magisk modules to hide the fact our bootloader is unlocked?

Nowaker said:
For the record - my current One Plus 9 Pro LE2125 (not the new one LE2127 I just purchased) has Android 11, OOS 11.2.7.7.LE15AA. It's rooted and passes all SafetyNet and stuff, and I don't have any extra Magisk modules.
Are you saying it's upgrading to newer versions of Android / OxygenOS that enhances security, and requires us to use extra Magisk modules to hide the fact our bootloader is unlocked?
Click to expand...
Click to collapse
I'm not saying that but it's probably a fair deduction. I had the same experience as you when I took OTA to 11.2.10.10, I was certified still. Prior to that (11.2.3.3.), I was not certified when bootloader unlocked. I keep usnf module installed just for extra assurance. Although, in some cases on our devices, it will be required to pass safetynet. There's a whole thread-in-thread on the hit&miss nature of some people losing certification and others keeping it, supposedly on the same exact set ups. Then I experienced it myself on the 10T. It sounds like it's more necessary on oos13 but I can't be sure.
As a side note, I'm still very tempted to try oos13. I've heard it's really smooth on this phone. Please let me know how you feel about it. Especially in comparison to oos11

Appreciative said:
As a side note, I'm still very tempted to try oos13. I've heard it's really smooth on this phone. Please let me know how you feel about it. Especially in comparison to oos11
Click to expand...
Click to collapse
I will. I'm collecting information on all the steps, before I start doing it. I think I'm ready but it's also a matter of available time to sit down and do it. With busy life, I don't know if it's going to be tomorrow, or some evening next week.
Note however I'm a pretty non-standard Android user. I keep thing my way. I always use Nova Launcher - which automatically keeps a lot of new features away for me. I may not really experience any difference once my things are in. All I really care about is AdAway and Vanced for stress-free experience, a fully functional Android Auto for driving, Google Photos and Nextcloud for photo backups, and that's about it.

Nowaker said:
I will. I'm collecting information on all the steps, before I start doing it. I think I'm ready but it's also a matter of available time to sit down and do it. With busy life, I don't know if it's going to be tomorrow, or some evening next week.
Note however I'm a pretty non-standard Android user. I keep thing my way. I always use Nova Launcher - which automatically keeps a lot of new features away for me. I may not really experience any difference once my things are in. All I really care about is AdAway and Vanced for stress-free experience, a fully functional Android Auto for driving, Google Photos and Nextcloud for photo backups, and that's about it.
Click to expand...
Click to collapse
I've read Android Auto is broken after Android 11, not sure what fixes are available however. I've read tons of people having issues with AA after upgrade to 12. Not OnePlus specific, I've read about samsung, Realme, asus rog and others all not connecting after Android 11. I think it might be something to do with AA going away. May be something to look into before heading to 13 if it's a must-have for you.
I have AA set up as well. The only issue is when I do screen2auto, to get the icon in my headunit to open s2a, I must uninstall AA update, connect to my car, then upgrade back to latest AA. Then I'm able to cast/mirror my screen to my navigation screen. The kids like to watch youtube videos and whatnot while we are on the road. Or, if they bring their tablets, I use VPN Hotspot for bypassing the Tmo throttle of 600kbps on hotspot connected devices. They can youtube their choice for the rest of the ride. (Playing iSpy, find the colored car, count the diesel trucks etc only lasts for about 15 mins)
I also use Vanced. I tried ReVanced but it started glitching my screen out. I'll give them some time to fix their bugs before I head over to it. It's kinda cool because you can (must) patch in/out the features you want on whatever youtube apk you want. It's still a bit early based on the bugs I experienced but I am sure it'll get better over time

Appreciative said:
That will temporarily boot you with root. You have to finish the magisk install from here.
Then I reboot and ensure phone is rooted properly.
I download the OTA and let it install. Do not let it reboot after the OTA is finished. You need to go back to magisk and temp unroot by pressing "uninstall magisk" and choose "restore images". Then choose the option for 'flash to other slot OTA'.
Click to expand...
Click to collapse
I'm not sure if this works for the 9 pro (I'm researching conversion of a t-mo model that I'm thinking of ordering ATM) but on my 7T I always take the option to download the full update image (usually like ~2GB) and install to the inactive slot, then you just inatall magisk to the inactive before rebooting. That lets you skip the uninstall bit and allows you to roll back to the current rooted state if there're any problems with the update. It's a bigger download than an OTA patch but it's fewer steps altogether.