yashsingh1/xdaforums huggingface dataset:
[OnePlus 8T Guides, News, & Discussion] jamescable:
That wasn't what I was asking. I don't care about sim unlock. I use T-Mobile only. What I am saying, like on the 6t, will this allow me to unlock bootloader and flash ROMs while leaving sim lock intact?
[OnePlus 8T Guides, News, & Discussion] cpkelley94:
Hi all! I have a new T-Mobile OnePlus 8T KB2007 and would like to unlock the bootloader to flash LineageOS 18.1. I am considering going for the MSM approach because T-Mobile has not been able to unlock my device. I actually do not need a SIM unlock because I am a T-Mobile user in the US. I only care about the bootloader unlock and being able to root, get TWRP, and flash custom ROMs.

Couple questions:

1. Does the MSM to EU method allow me to unlock the bootloader without an unlock token, even if my phone remains SIM-locked to T-Mobile? Will I even be able to accomplish this method if I am still SIM-locked?

2. How can I back up crucial modem data in case my persist/IMEI gets corrupted in the process?

3. Does flashing to EU change the cell connectivity of the device at all? I have great connectivity on T-Mobile 5G and WiFi Calling right now and don't want to lose that, I need the device to continue working well in US/NA.

Thank you!
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Can those who converted using this method share about phone screen I saw YouTube video after conversation all info was there, but here under the guide it says you will not see info when click about phone section.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
I am not using it in USA and 4G bands of CN version is compatible with my country gsm networks :-)
[OnePlus 8T Guides, News, & Discussion] alphahere:
Warning! I was not looking and took the latest update. Didn't check out the forums and didn't realize it was android 12. Well everything went well expect lost the second sim. It shows as disabled. Can't figure out how to enable. Not the end of the world but a minor lose. Running EU firmware on T-Mobile version. Another bug that has been reported with android 12 is one has to delete fingerprints and reenter fingerprints but that didn't work for me. So lost fingerprint also. I suspect there are more bugs. I may downgrade but for now everything is working expect the second sim.
[OnePlus 8T Guides, News, & Discussion] alphahere:
Got the fingerprint working with this update.

https://xdaforums.com/t/oxygenos-12-beta.4383689/page-7#post-86562887
[OnePlus 8T Guides, News, & Discussion] cpkelley94:
I went through the process successfully and just wanted to answer my own questions for others who are still thinking about this:

1. Yes. My phone is still SIM-locked, yet my bootloader is unlocked and ready to flash. Just have to follow the instructions in OP.

2. I don't think this is possible if you start with a locked bootloader, so I just had to take a leap of faith here. Everything went well for me.

3. Haven't noticed any changes to cell connectivity yet. WiFi Calling, 5G, and VoLTE still work on EU firmware, even on T-Mobile in the US.
[OnePlus 8T Guides, News, & Discussion] alphahere:
I was not impressed with android 12 and reverted back to android 11. I attempted a system downgrade using the oneplus recommended method but bricked the device. Used the method in this thread to unbrick the device and everything is working well with both sims. Question - Both sims have the same imei number but work fine. I thought dual sim phones required two different imei numbers?
[OnePlus 8T Guides, News, & Discussion] hassam794:
Hi @craznazn , this was a great work from you, i used this on 8t TMO and was getting regular updates, everything was fine upto Android 11 all updates, recently i OTA upgraded to Android 12 (official), phone model changed to kb2003 (was kb2007 in OOS11). And dual sim functionality is gone, second IMEI appeared to be "null" after update (sim 1 is working fine). I tried every possible solution available on internet but dual sim didn't worked, at the end i am looking forward to you for a fix, you must have some sort of solution or guide. I dont mind rooting my device or unlocking bootloader, just need dual sim and OOS12. Your help will be highly appriciated. Thanks
[OnePlus 8T Guides, News, & Discussion] hassam794:
Same issue faced by me i converted from tmo to eu using this guide, after android 12 update lost second sim, second imei appears as "null", before upgrading to android 12 both imei was same in android 11 and both sims were working.
[OnePlus 8T Guides, News, & Discussion] erezbiton9:
Hello.

I have a question.

I have 8t oos 12 kb2005 last update.

Can I convert this to kb2003 eu?
[OnePlus 8T Guides, News, & Discussion] The Fume:
so it seems the tmobile version may be stuck on 11 unless one doesnt care about the dual sims. kind of a bummer. i doubt tmobile will send out to many more if any updates.
[OnePlus 8T Guides, News, & Discussion] gidieberry:
Where is the link?
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
There you go https://xdaforums.com/t/op8t-oos-tmo-kb09cb-unbrick-tool-to-restore-your-device-to-oxygenos.4180981/
[OnePlus 8T Guides, News, & Discussion] darko454:
Does anyone know if this method will void one plus warranty? Thank you
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
If it is TMO version you need to use MSM tool posted here and it will revert back to EU OOS11
[OnePlus 8T Guides, News, & Discussion] RawSlugs:
Will the old fastboot method work from a mac?[/hide]
[OnePlus 8T Guides, News, & Discussion] craznazn:
Yes, as long as fastboot and adb works for you.
[OnePlus 8T Guides, News, & Discussion] RawSlugs:
Thanks, i'm noticing in the "manual" method is doesnt mention anything about fastbootD is that a mistake or only a requirement for the included download zip?

edit: to be safe i just it in fastbootD mode and it seams to have worked
[OnePlus 8T Guides, News, & Discussion] RawSlugs:
i had issues, dialer and contacts were not installed so i installed google version

i toggled airplane mode on/off and it worked, hopefully i wont have to keep doing that
[OnePlus 8T Guides, News, & Discussion] craznazn:
Yes, manual install should follow the same process as the script, so parts in bootloader, and most in fastbootd.
[OnePlus 8T Guides, News, & Discussion] darko454:
I am Sim locked and boot loader locked

T-Mobile gives me mixed answers for Sim network unlock

I just want to unlock boot loader to root

But can I follow this method

:adb shell pm uninstall -k --user 0 com.qualcomm.qti.uim. to allow OEM unlocking?

Then fastboot oem get_unlock_code

then request unlock_code.bin on one plus web site?

thanks again
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Hi @craznazn I would ask you something regarding Oneplus 8T TMO version, is there any idea why it is not possible to clearly convert this model to other models? Why it is only possible via MSM but not other method? What is different with TMO firmware?
[OnePlus 8T Guides, News, & Discussion] craznazn:
Because US carriers force OnePlus to add bull**** and remove features. One of the features removed is the "local upgrade" option in software updates where you can specify your own OTA, so regular OTAs you end up taking must be the TMO firmware.

Furthermore, the bootloader is locked down without an unlock key that you must jump through hoops and wait 7 days for. Don't forget the device is released with UICC/SIM lock as well.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Ok I agree with all that, but in this case quick question can I use MSM tool but replace msm firmware from EU to Global and flash it? or the file in your package has modified .ops file? Or in another words can use MSM tool for Global version but run it on TMO version phone?
[OnePlus 8T Guides, News, & Discussion] craznazn:
No, the MSM will take the manifest.xml in the .ops will check params on your device against it, and if the project or model tgt doesn't match, it will not work. The MSM executable itself doesn't actually change between the various models, just the .ops file
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
So the tmo eu conversion ops file has been modified correct, I mean the one that is in your zip file. Also did you tested after upgrading to OOS12 the about page still has that wrong model picture and info missing?
[OnePlus 8T Guides, News, & Discussion] craznazn:
Yes, the ops file is modified to allow the conversion. I have not tested OOS12 while I had the 8T, because I went to AOSP almost immediately after testing conversion and dual SIM.

Edit: I guess I can test it, gotta go find it in my cell phone bin :)
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Thanks for the willingness :-) please post results once you test it. Also may I know how to edit .ops file? I want to try to edit ops file from global msm package (KB2005 and flash it to KB2007 maybe this conversion will be better?
[OnePlus 8T Guides, News, & Discussion] craznazn:
There's some writeup on github, but there's no point because you can just flash the global ROM directly from local update.
[OnePlus 8T Guides, News, & Discussion] craznazn:
Seems to work fine without the additional fix, used the MSM to EU, Flashed to KB2005_11_C.11 via Oxygen Updater, Then updated to KB2005_11.C.16 via OTA.

The about page seems to work fine, you get the full description (KB2005) without any missing data, but dual SIM seems broken, IMEI2 is just "null" instead of taking IMEI1's value and it can't seem to be activated. Sooooo I would probably stick with AOSP if I was to still using this phone.

Amusingly, it looks like the local upgrade option is just gone!
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Thanks for the update !!!

Actually I am not worried about second sim at all I am not using that. Yes in OOS12 local upgrade is removed. like in ColorOS12, may I ask you try one more thing, sorry I am not in US and want to ask my brother get one TMO version for$349 that's why asking this much questions. Can you use this link to downgrader apk https://oxygenos.oneplus.net/English_20220225101104.apk

and downgrade to this KB2005 NA firmware https://oxygenos.oneplus.net/OnePlus8TOxygen_15.O.29_OTA_0290_all_2110091944_downgrade

If that will be successful than I will go ahead and ask brother to buy for me and send to my country, again I really appreciate your support and help. Thanks again !!!
[OnePlus 8T Guides, News, & Discussion] craznazn:
You don't need to downgrade like that, just flash the MSM and you'll be on a early version of OOS11, you can then upgrade to whatever version you want.
[OnePlus 8T Guides, News, & Discussion] darko454:
Any help please
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
I know that I just want to understand if the will work as well. Please if you still on OOS12 use that method and keep posted. I am sure even if that will brick phone you can use MSM and get back. Thanks again. Also can you let me know how to edit .ops?
[OnePlus 8T Guides, News, & Discussion] craznazn:
On first boot after a wipe, with no sim card installed, run the adb command and the OEM unlock SHOULD be available. I haven't tested this on OOS12 so YMMV.
[OnePlus 8T Guides, News, & Discussion] craznazn:
Can't do the downgrade right now, a little busy but check https://xdaforums.com/t/flash-international-rom-to-tmobile-metro-w-locked-bootloader.4297501/ out for making your own .ops, that guide is much better than the method i used to use because opscrypto has been updated to encrypt folders
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Thanks for all your effort. I will ask brother to get from OnePlus website anyway it worth $349. But if there will be a chance please use the method I posted above to downgrade. I will look to the guide as well for ,ops
[OnePlus 8T Guides, News, & Discussion] darko454:
Thanks

I am currently on oos11
[OnePlus 8T Guides, News, & Discussion] craznazn:
This is one shady looking app lol, but at least the source seems legit enough. I did run it and it seems successful, going from OOS12 KB2005_11_C.16 to OOS11 11.0.11.11.KB05AA. It forced a wipe like other downgrade flashes, so be careful if you decide to use it.

OTOH, dual SIM works again.
[OnePlus 8T Guides, News, & Discussion] LinhBT:
Great work bro, your pack saved me to get rid of the annoying TMO ROM. There's an issue ( minor though ) but still I wanna ask. After converting to EU, everything are completely fine for me, but once, when I tried to revert back to stock to do some experimental, the issue appear : I can't flash the unlock_code.bin anymore, it return with an error msg of can not verify. Therefore, I can't unlock the bootloader when I'm at TMO stock anymore. So, if there's any way out of it, pls help to enlighten me.

Thanks a lot bro!
[OnePlus 8T Guides, News, & Discussion] jcsww:
Your device has to be SIM unlocked to flash the bootloader unlock token on the T-Mobile firmware.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
for unlock this must unlock bootloader ? on oneplus 8T ?
[OnePlus 8T Guides, News, & Discussion] LinhBT:
Ofcourse bro, my device is fully SIM unlocked, that's why I have unlock_code.bin from TMO
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Thanks for confirming it that's what I expected. I am waiting my TMO 8T item to arrive soon to me maybe within 2 weeks. and want to do this method convert to EU than update to KB2005 OOS12 and downgrade to KB2005 global rom OOS11. App is not shady it is official Oneplus forum apk they posted this for those who want to revert back from OOS12 ) what about the about phone page is it still showing correct info or it gets back to wrong phone picture and missing info.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
T-mobile flash to EU or GLOBAL..if yes..how to enabled sim 2..already use dual sim tray oneplus 8T but..sim 2 like been locked can't enabled on T-Mobile to EU rom
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
If you follow up this guide you can convert your TMO to EU than can upgrade to global using Oxygen updater or local upgrade mode, sim 2 will be only on OOS11 if you update to OOS12 will loose sim 2.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
that's mean just need to stay at oos11 r8 or on global oos12 also can't use sim 2 ?
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
For the moment OOS 12 no sim 2, not sure what will be happened in future.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
ok noted..but how to easily backup data and app on the device without root
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
For the moment you can use Android default backup which is working perfect. Did not used other methods.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
ok trying now..but how to downgrade to oos11 ?
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Use TMO EU conversion tool again and it will bring you back to OOS11 EU.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
can use this https://forums.oneplus.com/threads/tuto-retour-vers-android-11.1563548/page-2#post-24187450 ? my pc had repair r8 now..next week will finish repair
[OnePlus 8T Guides, News, & Discussion] The Fume:
i cant say that way works because i did not try it. i found it easy to just use the msm tool to downgrade but it may work not sure. it def does wipe data either way though i do know that.

also @ITMASTER in your post you said you would use the msm then to 12 then back to 11. unless you want to see 12 you dont need to go to 12 then back to 11 again just use the msm tool then download the version of 11 you want to be on and use the local update option. or maybe i misunderstood. then i recc turning off auto updates. one of our 8t's tried updating to 12 again. i really hope someone can figure out why 12 doesnt work on the tmobile version.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
The idea is going to KB 2005 OOS12 and use Oneplus official downgrader to have it KB2005 OOS11 , and see if about page is working, because their APK downgrader is doing it on very low level by flashing every section so my hope is to see if it is better than MSM tool conversion.
[OnePlus 8T Guides, News, & Discussion] The Fume:
ahh gotcha. i missed where you said that. def keep me posted. i cant mess with mine right now because of work but i may do that if it works. im curious about the dual sim that way also.

also for some who have issues with getting the msm tool to start (since i have been asked many times) -

msm tool - after doing it numerous times for the tmobile version out of the box (9 8t's now) this way works every single time. using the msm tool is super simple for the 8t for those who want to change, download the msm tool, extract it. on the windows computer plug the phone in and install driver if it doesnt for you. turn on developer options then turn on usb debugging say yes to the pop up and make sure you are connected. dont touch any other settings. run msm as administrator, once open leave it open. power off the phone. click start on the msm tool it will now be waiting. now on the phone hold volume up and volume down NOT POWER and while holding those plug in the phone with the usb cable to your computer. the msm tool should immediately start working. leave it be til done.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
I have used msm tool before for 9R CN version converted to global. Don't had an issue. Hope same will be with 8T but before converting I need to ask TMO to unlock it for me than I go forward.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
Hi @craznazn I was able to use that method and created TMO- to Global conversion package as for the moment I don't have phone with it is on the way to me ;-) to test it out, may I ask you to test on yours and leave feedback? I have uploaded package here https://mega.nz/file/11dEAK5T#zpHHazY0npl29BCXFa04R9eHiJLVG15CyDuPZiuEqAo

Thanks in advance
[OnePlus 8T Guides, News, & Discussion] The Fume:
@ITMASTER do keep me posted if you that process works for you. i wish i had a second one to mess with but i need the phone right now for work or id be messing with it. im tempted to order another one if someone can get it to update properly its really a no brainer for the money right now
[OnePlus 8T Guides, News, & Discussion] craznazn:
The about page is never going to work without my mod, because the ROM reads the model name and displays information based on that name. The EU/Glo/Ind rom expects to see 'kebab' and displays that information, but the TMO version replies with kebabt. The EU/Glo/Ind rom doesn't know what to do with "kebabt" and displays null. All my magisk mod does is rename the build.prop system name from kebabt to kebab
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
I can't keep posted until my phone reach to me and I do TMO unlock first, than I can do this testing's. If someone will have phone that can use for testing's they can use the link I have posted.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
What if we change this part when extracted .ops file? in which section this file build.prop system name located? Also if I use that mode and then remove root will that change remain there with buil.prop I don't want have rooted phone because of banking apps.
[OnePlus 8T Guides, News, & Discussion] Hayatzada:
Hi

i enjoyed your work and using T-Mobile coveted 8t Flawlessly by following your method.

Just Humble request Please update your thread for OOS-12 because 2nd Sim is not working in OOS-12. Me and many others are waiting for your update for OOS-12

Thank you so much
[OnePlus 8T Guides, News, & Discussion] craznazn:
Nah I really wouldn't recommend it. It MIGHT be set in param, but changes to param is very much at your own risk. I do not recommend or support it in any way. If you just change it in build.prop, it's gonna fail cryptographic verification since the signature is not gonna match the hash of the partition and wont boot without a unlocked bootloader. It's also guaranteed to fail Safetynet.

You can use root, unlocked BL, etc fine with banking apps. Just magisk + USNF and properly zygisk the relevant processes.

Thanks, I'll update the OP with that dual sim does not work in OOS12. There will not be any updates though, so if you want dual sim capability, use OOS11 EU/Glo or AOSP 11/12 with my enable_dsds.zip
[OnePlus 8T Guides, News, & Discussion] Hayatzada:
Thanks ALLOT,

it'll be fabulous if it works on OOS 12 also. I'll still be waiting for it in future for OOS 12.
[OnePlus 8T Guides, News, & Discussion] ITMASTER:
I have apps that not working tried already, but as I am going to have OOS12 on it and it is showing right info as you confirmed yesterday, even without your mod with magisk. I will convert it to KB2005 and upgrade to OOS12 and use without any rooting or unlocking bl. anyway not going to stay in 11. Thanks and I am waiting my phone to test the Ops file I have extracted and edited project and model part to flash using MSM.
[OnePlus 8T Guides, News, & Discussion] JayTheKid:
Nothing happens when I plug the phone into laptop in EDL mode. Just a black screen and MSM waiting on devices, I have reinstalled the drivers and restarted the PC over and over, what am I doing wrong. This is pissing me off

Is something wrong with the driver?
[OnePlus 8T Guides, News, & Discussion] jcsww:
Sounds like you need to I stall the Qualcomm drivers when the device is in EDL mode.
[OnePlus 8T Guides, News, & Discussion] JayTheKid:
the drivers in this thread did not work, the cab file wouldnt work. the q bulk turned to 9008 when I went to the msm faq thread and got drivers there, if you see my added screenshot something is still wrong
[OnePlus 8T Guides, News, & Discussion] The Fume:
start the msm tool. leave it waiting. unplug the phone from the computer. turn it fully off. press and hold volume up and volume down and while holding them plug in the cord from the computer. it should start the tool running. you dont have to do edl mode that way. if that doesnt work you will need a different driver.
[OnePlus 8T Guides, News, & Discussion] JayTheKid:
I have literally tried every variation of this, msm does not detect device
[OnePlus 8T Guides, News, & Discussion] jcsww:
The driver needs to be installed while the device is in EDL mode. adb reboot edl, have Device Manager already open so you can see the device pop up when it boots into EDL mode. right click it, properties, update driver, and choose the driver from the CAB file for EDL mode that you can find in this thread that you should have already downloaded.
[OnePlus 8T Guides, News, & Discussion] The Fume:
for me edl reboot has not worked one time. the only way was to use the volume buttons. multiple computers multiple 8t's multiple drivers. doing it the way i am now for some reason works every single time.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
anyone use A12 custom rom for 8t t-mo variant..will dual sim work or not ?
[OnePlus 8T Guides, News, & Discussion] jcsww:
Dual-SIM does not work on the T-Mobile variant on Android 12, regardless of which version of the stock firmware you are running.
[OnePlus 8T Guides, News, & Discussion] budakthegil:
that's mean for dual sim i need to use oos A11 or custom rom A11 r8 ?
[OnePlus 8T Guides, News, & Discussion] jcsww:
Yes

Yes. I haven't looked at any Android 12 custom ROM's to see if they were able to get dual-SIM re-enable for T-Mobile devices.
[OnePlus 8T Guides, News, & Discussion] The Fume:
are there any other issues then the dual sim on a12 with the tmobile version? my daughter wanted me to update hers and she doesnt ever use the dual sim.
[OnePlus 8T Guides, News, & Discussion] jcsww:
Everything else is fine. It's jist a big change for most with some features missing and the look of Colors compared to Oxygen OS.
[OnePlus 8T Guides, News, & Discussion] craznazn:
Dual SIM on A12 custom rom (NOT OOS) works fine, you need to flash the enable_dsds module. Remember though, you are updating your stock firmware to the latest A11 before flashing over to A12 custom. Follow the custom rom instructions closely.

enable_dsds.zip | by craznazn for OnePlus 8T

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

www.androidfilehost.com
[OnePlus 8T Guides, News, & Discussion] budakthegil:
ok thanks bro