T-Mobile 9.0.16 to custom Android 10 ROM? - OnePlus 6T Questions & Answers

Just got my 6T today and it updated, but since this is the T-Mobile variant, it is still on Android 9. OOS version is 9.0.16. I want to flash a custom Android 10 ROM but cannot figure out where to go from here.

Is the Bootloader Unlocked?

DarthVader said:
Is the Bootloader Unlocked?
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I don't think so. But I DID just convert to the International ROM using this procedure.

GuyInDogSuit said:
I don't think so. But I DID just convert to the International ROM using this procedure.
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Then just follow this guide https://forum.xda-developers.com/oneplus-6t/how-to/guide-sim-bootloader-unlock-root-t3921795
This will show you what you need to do to unlock the bootloader and also the sim if you haven't unlocked that.
from 9.011 you can upgrade to 9.0.17 and then 10.0.3

I actually did all that a few days ago, but I'm now having connection issues. The mobile signal drops quite often and when it reconnects it's never on LTE, it's always H+ or E. It stays like that until I reboot.

Related

[G930T] Official Stock Firmware Android 8 OREO (G930TUVU4CRF1)

Here is Stock Oreo directly from Samsung for the T-Mobile Samsung Galaxy S7 via Odin.
AP_G930TUVU4CRF1_CL13718910_QB18653810_REV02_user_low_ship_MULTI_CERT_meta.tar.md5
BL_G930TUVU4CRF1_CL13718910_QB18653810_REV02_user_low_ship_MULTI_CERT.tar.md5
CP_G930TUVU4CRF1_CP9980724_CL13718910_QB18653810_REV02_user_low_ship_MULTI_CERT.tar.md5
CSC_TMB_G930TTMB4CRF1_CL13718910_QB18653810_REV02_user_low_ship_MULTI_CERT.tar.md5
HOME_CSC_TMB_G930TTMB4CRF1_CL13718910_QB18653810_REV02_user_low_ship_MULTI_CERT.tar.md5
Link: https://drive.google.com/open?id=18q9f9VNkUHD6-YaSc1UVoXUchTvP5qJf
Don't forget to factory reset and clear the caches via Recovery after you flash.
Enjoy!
Can I flash this onto my G930A?
is it necessary to factory reset??? Something that I've always liked about samsung is that I update using Odin and the apps and confs still the same... but if I have to factory reset, then I will lost everything...
luis901101 said:
is it necessary to factory reset??? Something that I've always liked about samsung is that I update using Odin and the apps and confs still the same... but if I have to factory reset, then I will lost everything...
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All Samsung's have multiple ways of backing up and restoring. All you have to do is back up using Samsung cloud and when you start your phone it will ask you if you want to restore your phone and then everything will automatically come back to your phone. Factory reset fixes boot loop and other issues
Christopher97 said:
Can I flash this onto my G930A?
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I have an unlocked phone, I'm not sure how atnt works with other Sims or with their phones. I previously had atnt firmware but then switched to TMobile since I have TMobile sim
aarongotgame said:
I have an unlocked phone, I'm not sure how atnt works with other Sims or with their phones. I previously had atnt firmware but then switched to TMobile since I have TMobile sim
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Yeah I went ahead and flashed it. Works fine, better signal than on the ATT software and all features work
Christopher97 said:
Yeah I went ahead and flashed it. Works fine, better signal than on the ATT software and all features work
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Great, I also found my signal to be better as far as staying connected is concerned. At one point my data kept going out on the atnt firmware and I had to keep restarting the phone or mess with the Wi-Fi calling. I haven't had any problems since I flashed this and plus 8 is faster than 7 so I'm excited to not have to mess with this phone anymore and just leave it up to ota updates.
when root for sm g930t oreo be released?
abdessamed10 said:
when root for sm g930t oreo be released?
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Haha, good one
I can't use SIM card after upgrade, it said that "not registered on network", I tried many ways on internet but I didn't work. Please help me
Ying Yoh said:
I can't use SIM card after upgrade, it said that "not registered on network", I tried many ways on internet but I didn't work. Please help me
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Which sim card do you have and which carrier provides the phone because then you might have to flash back to 7 and use your carriers official firmware or flash your carriers official 8 firmware.
I have a SM-G930U. I wasn't expecting this to work...and it did flawlessly. Another surprise I got was flashing this firmware fixed my dm-verity issues. Thanks a lot for this thread. It gave a new life to a phone gathering dust on a shelf.
DragonFire1024 said:
I have a SM-G930U. I wasn't expecting this to work...and it did flawlessly. Another surprise I got was flashing this firmware fixed my dm-verity issues. Thanks a lot for this thread. It gave a new life to a phone gathering dust on a shelf.
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With that said...any root method yet?
Sent from my KFSUWI using XDA Labs
DragonFire1024 said:
With that said...any root method yet?
Sent from my KFSUWI using XDA Labs
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OEM unlock is an option in Developer Options. Has that always been there?
thedodecahydra said:
OEM unlock is an option in Developer Options. Has that always been there?
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It's there but it doesn't work. It's just a toggle button that would come with most Android builds for the phones that actually have unlocked bootloader.
aarongotgame said:
It's there but it doesn't work. It's just a toggle button that would come with most Android builds for the phones that actually have unlocked bootloader.
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Still doesn't answer my question lol...root possible yet? Tried the nougat eng root to no avail.
Sent from my KFSUWI using XDA Labs
DragonFire1024 said:
Still doesn't answer my question lol...root possible yet? Tried the nougat eng root to no avail.
Sent from my KFSUWI using XDA Labs
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All questions have been answered in the thread.
aarongotgame said:
Haha, good one
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If there was root before (there is), then I'm pretty sure it will soon be available for Oreo too. I don't see why there wouldn't be unless those individuals who created or found the engineering kernel for MM AND N, aren't around to help out again. If not, back to 6.0 it goes.
HI, Now I'm on a custom rom with Nougat. Sim's carrier is Orange(UE). If I flash this Official Oreo version the phone will become Locked, right? Any idea how to unlock it, no charges? Thanks!
Thanks for the upload. I was trying to see if SamMobile had this up yet but they did not have it up when I checked. I have the MetroPCS variant and it did have 8.0 available on SamMobile already. I am switching from MetroPCS to T-Mobile so this will be perfect to get my phone 100% ready.

Flashed Wrong Firmware

Hello friends of the XDA community. I have a Sprint unlocked variant. I'm on T-Mobile, but after September's update, I got sim invalid message. I thought this would be an easy fix to downgrade back to the previous stock Pie Firware. So I went to the Essential website and downloaded the wrong firmware and flashed it, it was open market but I have a Sprint device. Now the device just bootloops every time I try to flash the correct firmware. When I try to flash the correct firmware, it says wiping data and than it starts transfering data and a second after it reboots and bootloops. Am I doomed? Thanks guys.
Open market works fine on Sprint devices. What did you download? Did you unlock your bootloader? Unlock critical?
Thank you so much for you help. I finally got it back up and running.
ziddey said:
Open market works fine on Sprint devices. What did you download? Did you unlock your bootloader? Unlock critical?
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Sent from my Pixel XL using Tapatalk
Maybe essential will release a fix in a few days for the relocked Sprint phones. Otherwise, if you wanted to unlock it yourself so you can run the latest update, see https://forum.xda-developers.com/showpost.php?p=77532356&postcount=20 since it sounds like you already have your bootloader unlocked.
Do you mean bootloader or sim in terms of unlocking? Bootloader is fine. I'm sim locked.
ziddey said:
Maybe essential will release a fix in a few days for the relocked Sprint phones. Otherwise, if you wanted to unlock it yourself so you can run the latest update, see https://forum.xda-developers.com/showpost.php?p=77532356&postcount=20 since it sounds like you already have your bootloader unlocked.
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Sent from my Pixel XL using Tapatalk
With an unlocked bootloader, you can either root and flash sim-unlocked modemst images with dd, or downgrade the bootloader and use it to flash.
ziddey said:
With an unlocked bootloader, you can either root and flash sim-unlocked modemst images with dd, or downgrade the bootloader and use it to flash.
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Is there a link for this method? Thanks!

SIM unlocking unlocked TMO 6t

Yesterday, I flashed the international OOS in my TMO 6t then unlocked the bootloader and rooted it.
However I never SIM unlocked the device beforehand.
Can the device be sim unlocked with root access?
Additional question, what bad may happen flashing stock TMO branded OOS on my bootloader unlocked device?
What I've seen recommended is to use the MSM tool to flash back to T-mobile software and then request the SIM unlock.
brossovitch said:
Yesterday, I flashed the international OOS in my TMO 6t then unlocked the bootloader and rooted it.
However I never SIM unlocked the device beforehand.
Can the device be sim unlocked with root access?
Additional question, what bad may happen flashing stock TMO branded OOS on my bootloader unlocked device?
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I went international also, however I was already sim unlocked. You could just go back full TMO and sim unlock... Maybe I'm not sure. What process did you use to unlock the bootloader and root?
serv380 said:
I went international also, however I was already sim unlocked. You could just go back full TMO and sim unlock... Maybe I'm not sure. What process did you use to unlock the bootloader and root?
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fastboot oem unlock
fastboot boot twrp.img
Flashed twrp zip in temp TWRPthen flashed magisk.
After I flashed the international ROM..
brossovitch said:
fastboot oem unlock
fastboot boot twrp.img
Flashed twrp zip in temp TWRPthen flashed magisk.
After I flashed the international ROM..
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You would have to go back TMO version and request permanent unlock. T-Mobile can only do this or pay a third party to do it. When I got mine on release date I told TMO I was going overseas and gave me an unlock right away. The unlock app is not supported on the international version it'll give you an app not supported if you try to sideload it.
Addiso said:
You would have to go back TMO version and request permanent unlock. T-Mobile can only do this or pay a third party to do it. When I got mine on release date I told TMO I was going overseas and gave me an unlock right away. The unlock app is not supported on the international version it'll give you an app not supported if you try to sideload it.
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I know this, but i wouldn't side load an app, I don't usa adb to install system apps.. LOL
brossovitch said:
I know this, but i wouldn't side load an app, I don't usa adb to install system apps.. LOL
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Okay lol just clarifying, but yeah only way is to go back to TMO stock rom and request the permanent unlock through the app after your imei has been whitelisted. As for flashing TMO rom on top of international, your best bet would be to use the TMO MSMtool to go back to stock.
Addiso said:
Okay lol just clarifying, but yeah only way is to go back to TMO stock rom and request the permanent unlock through the app after your imei has been whitelisted. As for flashing TMO rom on top of international, your best bet would be to use the TMO MSMtool to go back to stock.
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Yea, figured..
No matter I'll never use it off TMO network anyway. But when I pay off the last $500 I'll swap back and unlock.

Pie Factory Images Released

Haven't seen anyone say anything yet about it...
MR0 and MR1 Pie factory images released for Global
MR1 for CKH
Sorry ATT variant, not yet..
https://developer.razer.com/razer-phone-dev-tools/factory-images/
I'm on ATT variant too, already ditched their build and using global firmware. No issues so far. Hope this helps someone else.
jonchance_84 said:
I'm on ATT variant too, already ditched their build and using global firmware. No issues so far. Hope this helps someone else.
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You flashed global to your att model? Been thinking about doing this just been scared to.
DrGonzo6o said:
You flashed global to your att model? Been thinking about doing this just been scared to.
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Yup! Just be sure the unlock bootloader. Reason why I waited a while, was ATT usually doesn't like bootloaders to be unlocked, so they'll lock that down. Not the case with this phone.
So I unlocked the bootloader, which factory reset the phone. Then flashed the global firmware for Oreo. But you'll be lucky, you can flash the latest pie firmware from the start. I had to flash the Oreo global, then update from within settings to get pie.
Good luck.
jonchance_84 said:
Yup! Just be sure the unlock bootloader. Reason why I waited a while, was ATT usually doesn't like bootloaders to be unlocked, so they'll lock that down. Not the case with this phone.
So I unlocked the bootloader, which factory reset the phone. Then flashed the global firmware for Oreo. But you'll be lucky, you can flash the latest pie firmware from the start. I had to flash the Oreo global, then update from within settings to get pie.
Good luck.
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Will I need to lock the bootloader back when I'm done? Maybe be a stupid question.
DrGonzo6o said:
Will I need to lock the bootloader back when I'm done? Maybe be a stupid question.
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No reason to re-lock the bootloader
peneoark said:
No reason to re-lock the bootloader
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will be able to get ota's from here on out with out locking it back?
Yes and no. If you don't root, you'll get ota's no problem. Rooted, you will still see the update, but there is a more involved process to update.
Once you're on global firmware, consider yourself an unlocked variant of the phone. Forget ATT.
jonchance_84 said:
Yes and no. If you don't root, you'll get ota's no problem. Rooted, you will still see the update, but there is a more involved process to update.
Once you're on global firmware, consider yourself an unlocked variant of the phone. Forget ATT.
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Awesome I have no plans on rooting just want to be on that software. So I can lock the loader back and that won't effect anything? Thank you so much.
Nope. Just follow the instructions on the Razer site. Easy.

Clarification question regarding rebranding a tmo 6t.

I've had my 6t for a while now. When I got it I followed this guide, https://forum.xda-developers.com/t/...-flash-twrp-root-nandroid-efs-backup.3851789/ , and all was good until I tried to update. Everything continued to work but it broke root. ( I later learned I shouldn't have tried to run the OTA.)
Anyway. I'd like to get rid of the T-MO branded ROM. I just need some clarification. I'm on 10.3.4 currently. SIM and bootloader are unlocked. TWRP 3.4.0.0 is installed. So that being said do I have to follow the MSMDownload guide and convert to international, then go about updating to current, or can I just grab the most recent oxygen or lineage release and flash that ( preferably OxygenOS)? I assume that since my bootloader is already unlocked I can just flash from TWRP, but I've seen conflicting comments. From what I can tell I have flash everything to both slots, is that correct? Do I need to upgrade TWRP? Finally re-flash Magisk for root.
My end goal is just a non T-MO branded OxygenOS that I can update. From what I've seen I can do local upgrade once running OxygenOS. Is there a specific process for upgrading oxygenos once its running. I've seen you have to remove Magisk modules etc before running it.
Thanks!
You pretty much got everything down as you said. Convert, Update to current, and you are golden. If you want to try LOS then that is in a completely different ballpark.
@j1tters Here's how I converted my T-Mobile 6t to global. Hope this helps.
T-Mobile 6T to International Conversion (WITHOUT unlocked bootloader/SIM unlock!)
In the previous thread, we discussed a method to convert T-Mobile 6T's to the international variant, sort of, but it required an unlocked bootloader, which itself requires a SIM unlock which T-Mobile gives people a hard time about. However, it...
forum.xda-developers.com
Huskied said:
You pretty much got everything down as you said. Convert, Update to current, and you are golden. If you want to try LOS then that is in a completely different ballpark.
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Thank you.
flash713 said:
@j1tters Here's how I converted my T-Mobile 6t to global. Hope this helps.
T-Mobile 6T to International Conversion (WITHOUT unlocked bootloader/SIM unlock!)
In the previous thread, we discussed a method to convert T-Mobile 6T's to the international variant, sort of, but it required an unlocked bootloader, which itself requires a SIM unlock which T-Mobile gives people a hard time about. However, it...
forum.xda-developers.com
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Click to collapse
Thanks, that post was helpful. Was smooth sailing until trying to get it to boot into twrp via fastboot. Reboots and just sits at the fastboot screen. Not sure if there is an issue with twrp-3.4.0-11 for fajita. Tried 3.4.0.0 also. Same issue.
Going to try updating with Oxygen Updater then see if its happier with twrp..
Is there a specific version of TWRP I need to get it to boot?
Got twrp taken care of but I'm a bit confused by magjisk v22. Looks like flashing from recovery isnt the preferred way anymore?
j1tters said:
Got twrp taken care of but I'm a bit confused by magjisk v22. Looks like flashing from recovery isnt the preferred way anymore?
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Rename the magisk22.apk to magisk.22.zip and yes it can then be flashed in twrp.
flash713 said:
Rename the magisk22.apk to magisk.22.zip and yes it can then be flashed in twrp.
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Thanks! I saw that but it says that's the "old" way.
j1tters said:
Thanks! I saw that but it says that's the "old" way.
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Try it. It works for me on all roms.
flash713 said:
Try it. It works for me on all roms.
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Worked perfectly, thank you again! Oh man how I missed adaway!.

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