And what variant will be shown in the "about phone"? Like KB2007, KB2005, Etc, Etc....?
[GUIDE] Convert TMO to EU via MSM Tool, no SIM Unlock or Bootloader Unlock needed!
- Thread starter craznazn
- Start date
I installed KB2005 C.11 ROM after bootloader unlocked
Can't detect sim after updating to Android 12. I couldn't find a fix anywhere. I am using Verizon with the unlocked T-Mobile. Not sure if that has anything to do with it. I had to MSM back to 11 for now.
Android 12 disables SIM 2. You can reactivate it with a root module. SIM 1 should still work fine.
I tried a magisk module that was posted that detects sim and I have data services now but can't place or receive phone calls.
Does this workaround make any sense to you? It somehow involves the official rollback package and then incremental update back to OOS12. But I haven't had a chance to test it yet.
No, first off, that is for the OnePlus 8T, not the Oneplus 9 Pro and that's about losing one of the sim slots, not about not detecting a sim and having no data or phone services.
I would recommend not trying this. This is a warning to anyone who is thinking about it. If you do try it, stay on Android 11. If you update to Android 12, it will not detect your sim and you will not be able to send and receive phone calls, nor have data services. The only thing you will have is text messaging. I have been trying for a week and a half trying to get back to T-Mobile and there are only two modified MSM's that return to stock and neither work for me. Also the magisk data fix doesn't work, so don't even bother trying. You will still only have texts working. It does indeed convert your phone to EU but it will cause problems later. Just a word of warning. As a last resort, I even backed up my persist, param and modems, and used the SMT download option in MSM which wiped my IMEI thinking that maybe I had corruption in the partitions. No big deal because I restored my backup to get everything back but the problem still exists.
Updating to Android 12 works fine for SIM 1 but it does disable SIM 2 on the T-Mobile model. I haven't personally tried rooting to restore the second SIM functionality.
You didn't specify what SIM slot you were having issues with. If you need dual-SIM, sticking with Android 11 will keep both SIM slots enabled.
I only have one sim slot and it's not detected on Android 12 but it's showing two on the phone. It says no sim even though I have one in. Works perfect on Android 11 so I'll just stick with 11.
That is the piece of information that will save other people (like me) weeks of time would have been wasted on this.
Such a shame that OnePlus now tortures the users to this extent just for bowing to carriers. I am returning the phone and won't consider this company till they stop such sh**y behavior.
Ok, I figured it out finally after so much frustration. I used the EU MSM and reflashed then downloaded the Oxygen Updater app and performed all Global local upgrades through the app and everything is working perfectly now. I'm on current Android 12, Global with fully working phone, calls, texts, data. I don't know why doing this instead of just updating through the built in system updater would make any difference at all but it seems to have!!
Congrats! Do you think it is worth it to stay on OOS11 to maintain VoLTE and Wifi Calling on US carriers? Nevermind if it is not related to you.
I have VoLTE now on 12 just no Wifi calling but I don't need Wifi calling. If that's what you want then stay on 11 but it doesn't matter to me. The other thing I forgot to mention is that to ensure you keep all services, you need to root and install the Magisk data fix module with what I did to fix my issues.
Okay thanks for the information. I also tried EU MSM + full local update via oxygen updater to OOS12, and lost connection to the second sim. As you said, root and Magisk data fix module is probably needed. I will keep it simple for now and just stick to OOS11 for a while. But it is very important that you verified that dual VoLTE works in your case.
Update:
EU MSM already brings dual sim/volte/vowifi on t-mobile usa.
System update shows 11.0.13.13.KB05BA the latest stable OOS11 EU firmware. Installed it. Dual sim/volte/vowifi still works. For this purpose, there is no need to flash NA/Global firmware. I will stick with for some time.
The phone reminds me of some good old days of OP5T. I will keep it little longer to see how it goes. Such a pity OnePlus is going downhill now.
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25*** Use this at your very own risk.
*** You will lose all data
*** Backup your working modem and persist, just in case
*** Read the entire post and follow the steps closely before asking for help. Post all error messages and steps you took. Screenshots and MSM logs will be best.
!!! I have officially retired my 8T, and can no longer provide additional support on this device !!!
It's finally here! A MSM tool that will convert your T-Mobile OnePlus8T+5G to EU KB05BA. From here you can local upgrade to any OOS flavor you want. This gives you Local Upgrade option, faster upgrades, open betas, dual SIM, and more! In fact, after conversion, you can unlock the bootloader without the unlock token (still need to be SIM unlocked, but in case you don't want to wait for the unlock token or if OnePlus's website is broken)!
If you are still SIM locked, you lose the Unlock app for when your device becomes unlocked, it's only available in the stock TMO ROM. If you want to go back to TMO ROM at any point, flash back with the TMO MSM: https://xdaforums.com/t/op8t-oos-tmo-kb09cb-unbrick-tool-to-restore-your-device-to-oxygenos.4180981/
Steps:
- Download the MSM Conversion package:
- AFH
MD5: 5ddb543c8a5e7587e0b2ad24d2025e77
- AFH
- Run MsmDownloadTool V4.0.exe (Windows 7 users may need to run the win7 version included)
- Select User type: "Other" and press Next.
- Press "Start". Don't mess with the default settings.
- Put your phone in EDL mode.
or completely turn off your device, hold vol up + vol down and plug in the cable.Code:
adb reboot edl - Wait about 5 minutes while it works.
- Done! If you keep the bootloader locked and run it stock, the About Phone page will be missing some fields.
Instructions to Bootloader Unlock a SIM locked device:
Old fastboot method
Fixing the About Phone page
Issues so far (please post if you run into more):
- In OOS11, "About phone" page does not work properly.
- Use the magisk module above to fix it.
- In OOS12, Dual SIM is not supported.
- A11 based A12 ROMs support Dual SIM after conversion, use my enable_dsds module.
- Unlocked bootloader without unlock_token must be done while in OOS11, as OOS12+ ABL will check that a token is needed
6I'm glad that the global version is working for everybody!!! For my next trick I'll be trying to mod the MSM Tool for a straight conversation without the need to unlock, stay tuned. I'm going to be needing testers let me know if you're interested.4Thank you for all the people willing to participate. I will keep everybody posted on my progress!! - Download the MSM Conversion package:
