yashsingh1/xdaforums huggingface dataset:
[OnePlus 8T Guides, News, & Discussion] jcsww:
@TheSayaMan I do have the T-Mobile model and it is the same hardware as the other models for the 8T's. That is why it is possible to enable dual-SIM.

@dhustler82 I have never unlocked the bootloader on mine. I have never felt the need to unlock it.
[OnePlus 8T Guides, News, & Discussion] heyChristo:
All right guys, Been reading through this forum all day and got this far. However I could not find where to pull the ota files out and lost root. anyone have a link to this version? I just need the image file for boot. This was way easier then the 7pro 5g, or maybe that experienced trained me for this. FYI, I am coming from the T-mobile variant and went the global route. I see the boot images here but I am not sure which one relates to this rom version: https://androidfilehost.com/?w=files&flid=320191

I just go this phone yesterday, so I am excited to have gotten this far so quickly.

EDIT: Never mind, I found the post from Bill Goss on how to pull the Image using the MSM too. Will try that.
[OnePlus 8T Guides, News, & Discussion] mslezak:
I updated to Android 12 using the EU MSM tool to A11, then applied (over wifi, normal phone updates) 1 update on A11, then the 2nd update was to A12, on a T-mobile Op8T and my phone service works fine, and 5G as well. Even if you MSM a different firmware, it doesn't affect the radios - they are locked from Qualcomm. In the past a few of us tried to hack in more bands, but you can't as vendors pay for the radio bands directly for each phone version. As someone mentioned if you have a dual sim tray, only sim 1 will work on A12, for some reason. Note - my bootloader is locked.
[OnePlus 8T Guides, News, & Discussion] raven911:
I have a OP8T, KB2007 (t-mobile variant), which was working fine dual-sim on Android 11 (KB2003 EU Rom), sim-unlocked, bootloader locked. I updated to Android 12, and now I'm getting that Sim-2 is not working (initially Sim 1 wasn't working either, but removing/reinserting SIM card fixes Sim 1). I really need dual-sim functionality, and I'm trying to get it back without having to wipe my phone and re-install everything. Seems like one option is to use the "roll-back" tool from oneplus, and go back to Oxygen 11 (but this wipes the phone). I assume with rollbacks, there's no way w/o losing data?

I also read that the enable_dsds magisk can solve dual-sim for A12. Is there any way we can use the Oppo Firmware decrypter to decrypt the A12 package, modify Settings.xml, and then re-encrypt, and then have "stock" A12 which allows Dual-Sim on KB2007 phones?
[OnePlus 8T Guides, News, & Discussion] craznazn:
I don't think this is the case. All it'll do is enable the 2nd SIM slot in settings, but unlike A11, IMEI2 will be unassigned instead of being assigned IMEI1.

Unfortunately, if you want dual SIM on A12 on a t-mobile 8T, you gotta go A11 -> AOSP 12/12.1 -> enable_dsds
[OnePlus 8T Guides, News, & Discussion] Mr Hassan:
Yes i maked magisk module but not work

But i can fix it if i get rw or mount remount in super.img in stock
[OnePlus 8T Guides, News, & Discussion] raven911:
I'm not sure people understand what you mean by getting rw / mount remount in super.img? What exactly do you need?
[OnePlus 8T Guides, News, & Discussion] Mr Hassan:
read write in rooted system

or unpack repack rom to modify it

mount remount also the same thing

and ofcourse people understand but this device is total sh!t i,m trying to fix it
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
For those converting to EU/GLO only to get OOS12, native T-Mobile OOS12 build is available (OnePlus 8T T-Mobile (KB2007_11_C.41).

T-Mobile OnePlus 8 and 8T finally updated to OxygenOS 12

After months, T-Mobile has finally released the OxygenOS 12 update, bringing Android 12 to the OnePlus 8 and OnePlus 8T.

www.xda-developers.com
[OnePlus 8T Guides, News, & Discussion] OP6Tluvvvaa:
Yes
[OnePlus 8T Guides, News, & Discussion] dante_67:
Any chance of getting the dual sim functionality on A12 now that the t mobile has released the a12 rom ?
[OnePlus 8T Guides, News, & Discussion] Scholeggo:
Hey guys. I have used this guide before on the op9 t-mo version. But I face 2 problems with using the convert tool to unlock the bootloader: any time i unlock the bootloader after converting, I ota and manually try to upgrade to 12, and either it fails to upgrade or, if I'm successful, I cannot boot the system. If I convert, keep my bootloader locked and ota to 12 then try to unlock, it will ask me for the code.

I traded my op9 to get a op8T+ (for unrelated reasons), and I'm gonna try to do this again because I want to flash a custom rom right away and not wait 1 to 2 weeks to get a code from the OnePlus site, and that rom requires that I'm on oos12 beforehand. Can somebody help me out so I know what to do when I get the 8T+ so I'll be on the rom immediately? I would very much appreciate it. Thanks.
[OnePlus 8T Guides, News, & Discussion] Msfdfsx:
I want a way to edit msm tool to apply to oneplus 7t
[OnePlus 8T Guides, News, & Discussion] jace90:
Can someone please explain why my TMO>EU won't recognize a European sim? It's still Android 11, just like the guides say to. It recognizes my NA Sim on either slot, but never both.

Also I don't get a second IMEI, for whatever reason.

PS. I've tried the second SIM magisk module
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
It seems to be simlocked, as converting TMO to EU doesn't remove simlock.
[OnePlus 8T Guides, News, & Discussion] jace90:
I don't think that's problem, I'm not using a TMO Sim.

I originally used the sim unlock guide in the OP, but I have tried it again using the official wait a week token method. Nothing.

I have also tried using a friend's EU card and it's same
[OnePlus 8T Guides, News, & Discussion] jcsww:
To add to that. The SIM lock can only be removed using the T-Mobile firmware.
[OnePlus 8T Guides, News, & Discussion] MevishL:
can i convert to eu from this version? it ask for unlock token when i unlock my bootloader , so i want to convert
[OnePlus 8T Guides, News, & Discussion] jcsww:
The EU version isn't currently available and is still in development. Once available, you can convert to the EU from the NA (Global) using Local Updater with the full update image to update as long as what you are updating to is newer than what you currently have on your device. If you have a KB2007, I would be interested to know if you have working dual-SIM enabled after updating.
[OnePlus 8T Guides, News, & Discussion] GenesisDH:
So far, the International and the Indian released version of OOS13 disables Dual SIM on T-Mobile/KB2007 devices, just like OOS12. This is from reports on Reddit.

I doubt the EU version will be different, as the OOS12 for EU disabled it.
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
According to the official forum thread it's released for EU.

OnePlus Community

Introducing our new OnePlus Community experience, with a completely revamped structure, built from the ground-up.

community.oneplus.com
[OnePlus 8T Guides, News, & Discussion] Angelmendez056:
Cees que funcione en oneplus8T+5G kb2007 ?
[OnePlus 8T Guides, News, & Discussion] BillGoss:
Please read the XDA rules: https://xdaforums.com/t/xda-developers-forum-rules.4200559/

Note 4. Use the English language.
[OnePlus 8T Guides, News, & Discussion] paxcow86:
:cowboy:
[OnePlus 8T Guides, News, & Discussion] kevinco1:
So I've had a KB2007 for two years now and held off on doing this because I figured by the time OOS12 arrived there would be a similiar method in place and didn't want to do this twice. But...this hasn't happened so I'm looking to take the time this go through this process even if it downgrades me to OOS11.

The question is - can I still do this while I'm on OOS12, C.43? After reading extensively it seems I can by MSM but I'm confused on what exact version of MSM to currently use and the best way to go about it.

Have no problem doing a search, but it's confusing to me based on the current state of MSM and how it's now locked for regular users not to mention the exact RAM configuration for KB2007 to use. Thanks in advance
[OnePlus 8T Guides, News, & Discussion] craznazn:
Clarified that OOS11 is the only place where you can unlock bootloader without unlock_code.bin.

You can run MSM from any version, it uses EDL and doesn't even boot into any part of regular boot chain. Only the 10Pro and 10T have the new OPPO EDL JIT encryption. Unfortunately, I can't answer your question regarding LPDDR4x vs LPDDR5, as mine was LPDDR4x. I hope someone can clarify that for you.
[OnePlus 8T Guides, News, & Discussion] kevinco1:
Should have mentioned that while I'm not rooted both bootloader and SIM are unlocked so don't have to worry about that.

But I'm thinking now... My main motivation to do this is root. If that's the case would it just be better to root OOS12 via Magisk instead of downgrading?
[OnePlus 8T Guides, News, & Discussion] bilalbls:
Friends dual sim is working in OOS 13 beta 1. I have installed it directly on OOS 11 with local update. And OOS13 beta 1 us very stable and smooth. I have not found any bugs yet.
[OnePlus 8T Guides, News, & Discussion] kevinco1:
So is it possible to go through this process successfully if you're on OS12?
[OnePlus 8T Guides, News, & Discussion] craznazn:
Yes, provided there is no DDR issues. It'll downgrade you back to 11
[OnePlus 8T Guides, News, & Discussion] raven911:
Has anyone who converted T-mobile to Global Rom, upgraded to OOS 13 Stable (F.13) had any issues? I'm running the EU rom, and was recently given the option to upgrade. With OOS12, I lost the ability do dual-sim...and seems like OOS13 also disables dual-sim, but just wondering if there are any other bugs to be aware of or anything else that might make it not good to upgrade?

On reddit there have been some folks saying that their contactless NFC payment stopped working (with google pay), but then another post said this was only an issue for people who use multiple user profiles on their 8T?
[OnePlus 8T Guides, News, & Discussion] element51:
Upgraded to OOS12 this morning.. everything seems to be working fine, but colors seem to be washed out, especially with the new Monet color palette. Has anyone found a solution to getting the colors back to the vibrancy OOS11?

Also, big thanks to all that wrote the guides to convert the T-Mobile KB2007 to EU firmware. It solved many bugs for me.
[OnePlus 8T Guides, News, & Discussion] superpotion:
Hey, I had a heck of a time trying to get all the proper drivers installed to get the MSMDownloadTool to work on a fresh install of Windows 10. Hopefully this helps someone else with a similar issue.

——

T-Mobile to EU XDA thread:

https://xdaforums.com/t/guide-conve...m-unlock-or-bootloader-unlock-needed.4188491/

(We are here)

MSMDownloadTool:

https://www.androidfilehost dot com/?fid=2188818919693805454

——

PRE-REQUISITES

Install ADB/fastboot tools (if you don’t have already):

XDA user fawazahmed0 - “Latest ADB Installer”

[Tool] Latest ADB Fastboot and USB Driver installer tool for Windows

All praise and All Thanks to God ADB Fastboot and USB Driver installer tool for Windows, which will always install the latest version. To update the adb fastboot and usb drivers again, just rerun the tool. OS Requirements: Windows 7 and Above...

xdaforums.com

Install OnePlus drivers properly:

1. !!! REBOOT windows into unsigned drivers mode !!!

2. XDA user Mbektic - “fix device not showing up in fastboot mode” guide

https://xdaforums.com/t/guide-fix-device-not-showing-up-in-fastboot-mode-windows-10-11.4194491/ (skip to Step 3)

2a. OnePlus drivers:

oneplususbdrivers dot com/latest (8T download page points here)

3. Make sure “unsigned” or “unverified” windows popup appears when installing, select “allow”

4. After installing OP drivers properly, move onto actually converting.

——

QUSB or QHUSB:

1. Connect phone to computer

2. In CMD, type “adb reboot edl” > Enter

3. IF YOU SEE QUSB or QHUSB instead of “Qualcomm 9008” WHEN CONNECTED:

XDA user gamingdoggo’s compressed .cab file (9/7/21 - #1246)

https://xdaforums.com/t/guide-conve...r-unlock-needed.4188491/page-63#post-85594511

3a. Download .zip file + extract to somewhere findable, windows + x > device manager

3b. Right click QUSB/QHUSB > properties > update driver > browse my computer for drivers > browse > go to where you extracted > select fe24…259d folder > should say “installed Qualcomm 9008 drivers”

3c. Restart computer

4. Connect phone to computer (if not already)

5. adb devices > make sure phone shows up like “XYZ362 Device”

6. Open MSMDownloadTool

7. In CMD, type “adb reboot edl”

8. Switch to MSMDownloadTool

9. COMX Device > Click Start (X will be a number)

10. Wait for progress bar to start moving (took me ~2-3 minutes)

11. Will boot to initial setup screen

To unlock bootloader:

1. Skip through setup (we will be factory resetting)

2. Enable developer options, enable USB Debugging

3. Make sure phone is connected to computer with ADB enabled (“adb devices” to check)

4. adb reboot bootloader

5. Windows + x > device manager

devices? (Someone please take a screenshot of this part, I forget what Windows exactly says) > Android

6. Update driver > browse my computer for drivers > browse > OnePlus Android Bootloader interface (i believe from OnePlus USB Drivers (c:\Program Files x86\OnePlus USB Drivers\OnePlus_android_winusb.inf) > 7. Install

8. adb > fastboot oem device-info (to verify BL lock status)

9. fastboot oem unlock > Enter

10. Volume key > volume down to highlight “YES” > power button to confirm
[OnePlus 8T Guides, News, & Discussion] mattwheat:
I had an original KB2007 TMobile version. I used this to flash it to LB2005. I had no issues. I flashed back when I was on Android 12. I took the over the air update for the KB2005 Android 13 and had no issues. I will say that I did have an issue taking the updates when I had TWRP installed. But once I flashed the stock recovery back to it the updates went through just fine. Now my phone shows that it is a KB2005. On the latest Android 13 OS.
[OnePlus 8T Guides, News, & Discussion] Lost Dog:
Can someone who went from T-moble KB2007 to global or EU test USB-C video? The T-Mo version lost the ability for many people after the update to Android 12. I have a monitor with USB-C input and it works fine with my Samsung phone but not my KB2007 (and reading online, this is a common occurrence).

I'm thinking of going to the EU version but would like to have both the US 5G bands as well as USB-C video out.
[OnePlus 8T Guides, News, & Discussion] jcsww:
Flashing does not change the available bands for the device. Your Kb2007 will have the same bands it came with regardless of the firmware you flash.
[OnePlus 8T Guides, News, & Discussion] Lost Dog:
I thought in the past there were issues with no longer getting T-Mo 5G after a flash to global or EU. Maybe I was mistaken! If that's the case, I don't see any downside to going to EU.
[OnePlus 8T Guides, News, & Discussion] jcsww:
I have tried them all and my KB2007 is still running the KB2001 beta 1 for India so I have dual-SIM. 5G has worked fine on every firmware I have used for T-Mobile.

Flashing via the MSM Tool doesn't touch the modem firmware.
[OnePlus 8T Guides, News, & Discussion] ianruto:
I have just unlocked my bootloader using this method. I need Magisk, so i need the boot image however i dont know the exact version to download from the repo. Kindly advise
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
It depends on what firmware version is installed on your device.

Check it in android settings.
[OnePlus 8T Guides, News, & Discussion] gdfajkldfkwfj:
KB2007 on LOS 20, conversion went fine

but reboot after first OTA (OOS 11.0.13.13.KB05BA) I got "system update failed"

I went ahead with the next OTA (KB2003_11_C.33) and did not have any problem
[OnePlus 8T Guides, News, & Discussion] fitrockx:
Did someone tested the video output to an external display? Going through the same issue after updating to A12 T-mobile version.

Update:

I have tested it. Doesn't work. Only works on Oxygen OS 11. Once you go up, you'll loose it. I ended up rolling back to OOS11 after testing OOS 13.
[OnePlus 8T Guides, News, & Discussion] Lost Dog:
I've not ever gotten this to work. I wish I could!
[OnePlus 8T Guides, News, & Discussion] fitrockx:
Sadly no way to get it working so far. Ended up rolling back to OOS11. I'll rather have the desktop mode working than the latest Android version for now.
[OnePlus 8T Guides, News, & Discussion] axeman71:
I have the 8T+ 5G T-Mobile KB2007 phone. I followed the instructions here, particularly the posts by user Hey-Hi on pages 62-63 of this thread. I installed the correct USB drivers, connected my phone in fastboot edl mode, started the MSM app and began uploading. 2-3 minutes into the upload the text turned red and it said I had lost the connection. I was unable to reconnect. I tried to reboot my phone and computer but my phone will only go to the fastboot menu or recovery mode. It will not boot into android. Further, in fastboot mode it does not connect correctly to the computer. Instead of seeing "QDLoader 9008" in my devices list I see "Android Composite ADB Interface". Running the ADB devices command does not show any devices.

Can I get out of this? I can't think of a way if ADB doesn't see the phone.
[OnePlus 8T Guides, News, & Discussion] heyChristo:
Boot in safe mode, uninstall one plus driver, then install generic, usb Google driver. I have instructions I wrote from addressing with this for my op7pro, but I'm traveling right now and don't have access to them. You may also be able to get instant support in the telegram group.
[OnePlus 8T Guides, News, & Discussion] axeman71:
Thanks, I did a quick search to try and find your generic usb google driver but didn't see it. It's late and i'm super frustrated so I'm going to sleep. I'll look again in the morning.
[OnePlus 8T Guides, News, & Discussion] heyChristo:
You'll have to manually install it through system devices.
[OnePlus 8T Guides, News, & Discussion] axeman71:
I found the latest generic google usb drivers and installed them. When my phone is in fastboot and connected it lists my phone as Kedacom USB Device - Android Bootloader Interface but adb still cannot see the phone.
[OnePlus 8T Guides, News, & Discussion] axeman71:
Ok, maybe I'm not in fastboot. When I turn the phone on I see fastboot mode for about 1 second then I get a screen with a green "Start" at the top. I can use the vol up and down to scroll through options for start, restart bootloader, revoery mode, show barcode and power off.
[OnePlus 8T Guides, News, & Discussion] TheSayaMan:
Your in the bootloader from that screen, so your not hard bricked but even so, you can boot into EDL mode and re-flash the firmware. Open up MSM, make sure sha check in unchecked and that lite firehose is checked and press start. Turn the phone off and do not have the phone connected to usb. Plug the other end into computer. Hold both volume buttons down. Without letting go of the buttons, connect your phone to the USB. It should make a sound, then release both volume keys and you will be in ELD mode. Because you pressed start on ELD before you connected phone, it will immediately start flashing the firmware. Make sure you pressed start on MSM before you connect your phone. Because you are not hard bricked, you will only have a couple seconds to start the firmware flash otherwise the phone will reboot itself. It will only remain in ELD mode if your hard bricked, and in your case, it's not.
[OnePlus 8T Guides, News, & Discussion] axeman71:
OK, I tried the steps as you suggested. the screen stayed dark, as it's supposed to for edl mode. MSM saw the phone but immediately turned red and said "automatic detection of DDR failed" I tried a few more times but got the same error. I did more reading and found that the DDR error seems related to the usb port and saw suggestions that I try a usb 2 instead of usb 3. My laptop only has usb 3 so I went to an old desktop I haven't used in a few years. Got everything setup but same DDR error. I tried every USB port but still get the same error. So frustrating!
[OnePlus 8T Guides, News, & Discussion] TheSayaMan:
Have you tried a different USB cord?
[OnePlus 8T Guides, News, & Discussion] axeman71:
Yes, many including the really nice one that comes with the phone.
[OnePlus 8T Guides, News, & Discussion] TheSayaMan:
You could also try the T-Mobile MSM to restore back to stock then retry this?
[OnePlus 8T Guides, News, & Discussion] axeman71:
With the DDR error, I cant use any of the MSM versions.
[OnePlus 8T Guides, News, & Discussion] TheSayaMan:
I did some research on DDR and it comes up as a motherboard problem so it seems unfixable but maybe someone else can help. I'm out of ideas, sorry.
[OnePlus 8T Guides, News, & Discussion] axeman71:
Thanks for your help. I've tried 3 different computers and multiple cables but I can't get it to work. Everyone else has had good results, I assume it's something wrong with my phone.
[OnePlus 8T Guides, News, & Discussion] kevinco1:
Try different MSM versions including the TMobile ones before you give up.

If you get things up and running, I'd immediately install a custom recovery like Orange Fox and then use the flashable firmware which detects DDR type and flashes to both slots. This should prevent the same error from happening again
[OnePlus 8T Guides, News, & Discussion] jensenchen68:
Hello,

I flashed the ROM without any issue,. The only problem is that there is only 4G option, and 5G is never there. Does anyone have the same problem? Is there any way to solve the issue? Thanks!
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
I suppose it's connected with carrier profiles inside the phone.

If a carrier profile that doesn't have 5G connectivity is activated, you won't see 5G in options.
[OnePlus 8T Guides, News, & Discussion] Sohaib4012:
Wi

Sir, will it work for OP9 TMobile ?

With Locked bootloader? I'm waiting for your reply
[OnePlus 8T Guides, News, & Discussion] Sohaib4012:
i tried this method now i dont get t mobile logo and also unlock bootloader, but still showing LE 2117 i want to convert it in EU, Please can you help ?
[OnePlus 8T Guides, News, & Discussion] jcsww:
It will ways show the actual model number. Converting does not change the available bands so on the EU firmware, it will still only have access to the T-Mobile versions bands.
[OnePlus 8T Guides, News, & Discussion] Sohaib4012:
Its mean we can not convert it in 2113?
[OnePlus 8T Guides, News, & Discussion] Purethoughts:
I have the OnePlus8T, and was had OEM unlock enabled when I was temp sim unlocked. I'm trying to use my phone with a different carrier, so even though I would like to flash different ROMs to it, this method will not help get uncarrier locked if I understand everything correctly. My question is this, If I root this phone, would it be possible for me to find a way to change the bands that it runs on? (i.e. allow additional carriers to work on it, and also get rid of the T-Mobile carrier lock by deleting it) Thanks for anyone's help on this.
[OnePlus 8T Guides, News, & Discussion] Mazahirshah:
any guide like this for oneplus 8 TMO as I cannot unlock bootloader with unlock dont know why but it ends up bootloop
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
Hello!

The hardware of the phone stays the same regardless of the firmware installed.

So changing firmware (Global/Europe/India) will not unlock additional bands in hardware.
[OnePlus 8T Guides, News, & Discussion] Qurwin:
Will this method work for my OnePlus 8T 5G (T mobile still locked Bl)

?
[OnePlus 8T Guides, News, & Discussion] saiyanumar:
Sir, I succcessfully converted my OP9 into global version. Now there is a error while installing local upgrade, can u please tell me if there is any solution or i can never upgrade my OP9 into latest os?
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
This thread is for OP8T, not OP9.
[OnePlus 8T Guides, News, & Discussion] lqtdc:
my phone just stop receiving updates for KB2003
[OnePlus 8T Guides, News, & Discussion] lqtdc:
any way to go back to stock tmobile rom?
[OnePlus 8T Guides, News, & Discussion] Rootk1t:
Flash it via MSM tool.
[OnePlus 8T Guides, News, & Discussion] lqtdc:
thanks