yashsingh1/xdaforums huggingface dataset:
[OnePlus 7T Guides, News, & Discussion] Uditkumar:
I m a newbie here and have a quick question about switching my T-mobile 7t to International.

I am currently stuck in a T-mobile contract for my 7t and they will not sim unlock the phone. I know that i can use the patched msm but the SIM will stay locked. The way T-mobile unlocks the sim is through the settings on 7t. For those of you who still have sim locked 7t on international Rom, will that option for network unlock still be there under SIM settings after switching to the International version or will i need to revert back to the T-mobile Rom later to get access to t-mobile sim unlocking screenif i want them to unlock it after its fully paid off?

Thank you to everyone for your contributions and guides
[OnePlus 7T Guides, News, & Discussion] hypercoyote:
Based on what someone else said, it is not there. They upgraded before the sim unlock and had to downgrade back to Tmobile to unlock.
[OnePlus 7T Guides, News, & Discussion] ericZX26:
Hi mate, thanks for your instruction. I flash 10.0.13 Global from 10.0.12 TMobile, OTA to 10.0.15 and lock the bootloader again. Google pay is working good.

:cowboy:
[OnePlus 7T Guides, News, & Discussion] Luisferaa:
Man, how can I relock the bootloader?
[OnePlus 7T Guides, News, & Discussion] ericZX26:
Hi mate,

My HD1907 was on 10.0.12, I unlocked it, flashed 10.0.13 Global, then OTA to 10.0.15 and lock the bootloader directly with this command:

c:\adb>fastboot.exe oem lock
...
OKAY [ 0.016s]
finished. total time: 0.016s

Caution: it will wipe your data and may cause some serious problems
[OnePlus 7T Guides, News, & Discussion] hypercoyote:
It's probably important to emphasize the OTA update you did. From what I've gathered, if you try to lock the bootloader directly after manually flashing it, it can cause some serious problems.

Also, will you be able to unlock the bootloader a second time without having the unlock key from OnePlus?
[OnePlus 7T Guides, News, & Discussion] mkelandis:
Hi - I followed these instructions to the T. After performing...

c:\oneplus\platform-tools>fastboot flash cust-unlock unlock_code.bin
Sending 'cust-unlock' (0 KB) OKAY [ 0.016s]
Writing 'cust-unlock' (bootloader) Device is unlocked.
OKAY [ 0.000s]
Finished. Total time: 0.031s

c:\oneplus\platform-tools>fastboot oem unlock
OKAY [ 0.031s]
Finished. Total time: 0.031s

...the phone rebooted to a blue screen showing language selection, and the adb device was no longer connected. I believe the Windows PC also popped a notification about installing drivers for a new media device (D:\). Wanting to get back into fastboot to perform flash-all - I held down the button to reboot the phone - it powered down. Now the phone won't power up, holding down the power button doesnt help. Would love some assistance here if someone has a fix to get the phone to power up again. Also - what was supposed to happen after that reboot to language selection?
[OnePlus 7T Guides, News, & Discussion] mkelandis:
Update: Holding down vol+/- and power button did get me back into fastboot. False Alarm. Ty.
[OnePlus 7T Guides, News, & Discussion] mkelandis:
...Note: I did end up having to reboot back to language selection - and re-setup the phone for ADB Debugging, and Advanced Reboot (after step 6, before step 7). Then reboot into recovery using the power button menu, and re-connect the USB cable. Then I could start step 7. Ignore all of the phone re-boots (and prompts for language selection) after you start flash-all. The command prompt on the computer will let you know when it's done... looks like this:

Sending sparse 'product_b' 1/3 (523616 KB) OKAY [ 12.618s]
Writing 'product_b' OKAY [ 3.062s]
Sending sparse 'product_b' 2/3 (523628 KB) OKAY [ 12.539s]
Writing 'product_b' OKAY [ 3.077s]
Sending sparse 'product_b' 3/3 (232340 KB) OKAY [ 5.572s]
Writing 'product_b' OKAY [ 1.523s]
Finished. Total time: 51.596s
Rebooting OKAY [ 0.000s]
Finished. Total time: 0.000s
Press any key to continue . . .

c:\oneplus\platform-tools\10.0.9-GLOBAL-OnePlus7TOxygen_14.O.11_OTA_011_all_2003271951_3cf84b1dee-FASTBOOT>
[OnePlus 7T Guides, News, & Discussion] starlaight:
Hi, I encountered the same issues with FAILED (remote: 'Partition not found') and FAILED (remote: 'Flashing is not allowed for Critical Partitions') errors. I thought maybe it was because I did choose English and go back to Fastboot for it to continue. I'm running flash-all.bat again and trying to just leave the phone alone at the language selection screen, but it's not proceeding and command prompt just shows < waiting for any device > after Writing 'vmmeta_system'

Edit to say: I did go back to Fastboot, although I didn't select English and click through it this time. I noticed an error that is in both times I have done it that says: "fastboot: error: Failed to boot into userspace fastboot; one or more components might be unbootable." And then I get the 'Flashing is not allowed for Critical Partitions' errors. I assume this might be related?

Editing again to say: Installing the drivers from the All in One Tool described here seems to have solved my problem. I was able to successfully get through the flash-all.bat and it didn't disconnect at the language selection screen.
[OnePlus 7T Guides, News, & Discussion] Duy Hiệp:
No matter what fastboot I used the logo T-mobile will always appear in the end. Phone still no signal, no wifi. Or it stuck in what might be fastbootd, I don't know. Some people say just let it be the phone will boot but I had waited few hours then I selected and it will reboot but still the same story. I have done everthing I could, please help!
[OnePlus 7T Guides, News, & Discussion] 0x0null:
It means you are doing it wrong.

1. from bootloader run the command: fastboot reboot fastboot

Your phone should reboot into what appears to be recovery. Quickly navigate to device manager and install driver for hd1907( thats your fastbootd needing driver installation)

2. Run the command: fastboot getvar is-userspace ( If it returns with a "Yes" it means fastbootd is active but a "No" means inactive)

3. From the ADB folder containing the files run the following command instead of the entire flashall.bat:

fastboot flash system system.img

fastboot flash vendor vendor.img

fastboot flash product product.img

fastboot reboot
[OnePlus 7T Guides, News, & Discussion] thardy00:
Hi!

I've been following the thread and everything gone fine. I converted to global, then did OTA and after that I've relocked my bootloader. Everything is okay but I would like to root my phone now. Hence I need to unlock bootloader again but old unlock code seems not working and I cannot get new unlock code via fastboot.

After trying with old unlock code (which I get when I was on Tmobile) I got this output:

fastboot flash cust-unlock unlock_code.bin

Sending 'cust-unlock' (0 KB) OKAY [ 0.013s]
Writing 'cust-unlock' FAILED (remote: 'Flashing is not allowed in Lock State')
fastboot: error: Command failed

After this failed attempt I thought that I will try to get a new unlock_code.bin from OnePlus but I've met another problemwhen I was trying to get unlock code which we need then paste on OnePlus site:

fastboot.exe oem get_unlock_code

FAILED (remote: 'Unknow command')
fastboot: error: Command failed

Any ideas what can I do right now to unlock bootloader once again :D ?

EDIT:

SOLUTION:

If someone will be in the same situation. You don't need to flash unlock_code.bin for another time. You just simply do:

fastboot oem unlock

and it's working as champ. Remember it will wipe your phone.
[OnePlus 7T Guides, News, & Discussion] Alejndrox097:
Would this work to go back to stock global? I mean I installed a custom rom but now I want to go back to oos so I can update the phone to oos 11
[OnePlus 7T Guides, News, & Discussion] clsA:
yes this will return a phone to stock
[OnePlus 7T Guides, News, & Discussion] Travisopp:
I've been trying to get this done for 3 weeks now, as of now when I run the flash-all.bat everything goes smoothly except opproduct.img, the error shows no such file or directory, and it tuns the screen black, then I run the msm tool again it is the 5th time today that I tried to make it work if anyone of you could help
[OnePlus 7T Guides, News, & Discussion] HueyT:
https://xdaforums.com/t/t-mobile-7t...unlocked-bootloader-sim-unlock.4153943/unread

This is what I used without issue
[OnePlus 7T Guides, News, & Discussion] Travisopp:
Hi all, I've been trying to convert my TMO OP7TPRO for weeks now, with the help of this guide I've been able to go past the the critical flashing error, as of now it is on 10.0.39 bootloader unlocked and rooted, tried flashing the global fastboot rom of 10.0.13 multiple times today it led me to a bricked phone 3 times, i tried the all in one tool to flash the global 10.0.3 which got me to a mclaren boot did not brick or boot on t-mobile screen, the visible issue that i face while flashing the rom is OPPRODUCT no such partition, as of my observations opproduct gets flashed as op2 on the msm tool, so far ive tried almost all the guides that were available but i always end up bricking it any help would be appreciated.

Thanks
[OnePlus 7T Guides, News, & Discussion] YousefHadder:
Hi all,

I have a 7t T-mobile device 10.0.3 version, it's SIM-Unlocked using the unlock token from T-mobile.

I've tried everything in this thread and other threads and nothing is working so far, MSM tool worked fine, then when I tried to flash the global rom I keep getting "FAILED (remote: 'Partition not found')", then my device boots to T-mobile ROM, now wifi and mobile netowork is not working at all.

can someone please help me I'm so frustrated.

Thanks.
[OnePlus 7T Guides, News, & Discussion] HueyT:
That is because u did not flash important partitions in fastbootD:

When it 1st boots to pink TMobile splash boot animation, u must hold down vol+ and power until it powers off. Then enter bootloader mode using vol- and power holding buttons. Only then can u type "fastboot reboot fastboot" to enter fastbootD mode which looks like stock recovery with Chinese writings x 2 lines and English x 1 line.

Then flash the ROM files again which will finally flash the system partitions correctly. Now it should boot and all functions will work
[OnePlus 7T Guides, News, & Discussion] YousefHadder:
oh I see, will try this now and get back to you.

Much appreciated

UPDATE 1:

Ok so first of all, before you replyed to me, I managed to unbrick back to t-mobile software and the wifi is back to normal, then it updated to Oxygen OS 11.

Now the current issue and before that, is when I use the MSM tool it doesn't actually boot into the pink screen, insted it's stuck in fastboot screen, the pink screen appears after flashing the global rom, which brings back the wifi issue, maybe because I got erros while flashing like critical partitions and other errors.

UPDATE 2(FINALLY):

It worked finally, I did so many things but I will summrize the steps I believe solved my issues:

First I made sure to unbrick my device back to 10.0.13 from this link:

https://xdaforums.com/t/op7t-t-mobi...our-device-to-oxygenos.4004005/#post-80909203

Then I downloaded the MSM patch tool from this link: https://drive.google.com/file/d/12y3lO0wIgb2_LSDeVw9x_2C_HjbgZlb_/view?usp=sharing

Then followed the steps in this link to get the actuall latest ADB platform tools:

[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

the latest tools where installed in C:\Program Files\platform-tools

from there I rebooted into fastbootD successfully, then I went back to the 10.0.13 Global Rom folder and ran flash-all.bat

and it worked like charm :D

Thanks all for the tips and help.
[OnePlus 7T Guides, News, & Discussion] orzking:
Followed this tutorial and successfully flashed my TMO 7T (even upgraded to TMO Andriod 11) to global Rom.

Post-flashing the global rom, my phone did stuck at boot amination (3 dots) during its 1st boot.

Forcing the phone to reboot didn't work (Vol+ & Power buttons)

In the end I booted into fastboot then into fastbootd - wiped all data - rebooted to break free.
[OnePlus 7T Guides, News, & Discussion] TheBelgian:
I followed this tutorial yesterday and got stuck in bootloop.

Could you give a little more detail as to the steps you took, I don't want to unbrick back to tmobile and then try again.
[OnePlus 7T Guides, News, & Discussion] orzking:
Hi, there. While I am offering these process steps with good intention to help you out, please kindly understand that what worked for my phone may not work for yours, and you accept the risks moving forward with my suggested steps (the worst case is bricking your phone, but if that happens then search the forum for TMO 7T unbricking tool -- it helped me unbrick it, note that the unbrick tool will return your phone to OEM bootloader locked status, so you need to unlock the bootloader again before flashing the Global Rom).

After your 7T is stuck at the 3 dots boot animation:

Step 1: Press Vol+ & Power button until it shuts down

Step 2: Press Vol+ & Vol- & Power button to boot into fastboot mode, once in, use Vol keys to navigate to recovery mode (you will see some red letters top of your screen) then press Power button to select

Step 3: Your 7T will now boot into fastbootD screen where it asks you to select language. After selection, press Power button and you will enter into a page where it offers you a few choices: Wipe & Clean; Advanced...etc.

Step 4: For now, select Wipe and Clean and choose to wipe all data including your personal files (the last option on the screen, I believe). Wait for 7T to finish. Once finished, your phone will go back to the fastbootD page.

Step 5: Now select "Advanced" option - boot into fastboot. Once in, press power button to start your phone. You should see the welcome page in Global Rom.
[OnePlus 7T Guides, News, & Discussion] TheBelgian:
Thank you, this also seems to have worked for me.
[OnePlus 7T Guides, News, & Discussion] aenubis:
This was the hard part. This thread has a way to do it from the driver files on the phone:

https://xdaforums.com/t/guide-fix-device-not-showing-up-in-fastboot-mode-windows-10.4194491/

Or You can pull it from the generic google usb drivers here:

Get the Google USB Driver | Android Studio | Android Developers

The Google USB Driver is required to perform adb debugging on Windows with Google devices.

developer.android.com

After fastbootd sees your phone properly (OnePlus Android Bootloader Interface or just Android Bootloader Interface), you can try manually finishing those flashes or rerun the whole flash-all.bat.
[OnePlus 7T Guides, News, & Discussion] Feenix0:
I got my phone working with these instructions, so thanks!!! However, when I put in my AT&T SIM card, I received this text message from the carrier:

The phone did work on the AT&T network with stock T-Mobile firmware. Any ideas why it doesn't work with the global firmware?
[OnePlus 7T Guides, News, & Discussion] mobbdeep:
I'm not sure. You might want to call AT&T and have them run the IMEI to figure out why it won't accept your device. Also, check to make sure you have software updates done. I don't work with anything related to carriers except the network unlock. Everyone who has had it done hasn't had any issues so I'm not too sure.
[OnePlus 7T Guides, News, & Discussion] aenubis:
If I had to guess it would have something to do with the VoLTE settings. I got a message from T-Mobile about VoLTE settings when I first took it on the network with the global firmware. Everything works, and I get a VoLTE icon in my network status, but I don't know much about as the U.S. market seems to have been slower to pick it up than the global market.
[OnePlus 7T Guides, News, & Discussion] Feenix0:
Okay, so I found a solution: https://www.getdroidtips.com/how-to-enable-volte-and-vowifi-on-oneplus-7-pro/

It's for the Pro, but it works for the 7T. The menu is just a little different.
[OnePlus 7T Guides, News, & Discussion] Mateensiddz:
Invalid sparce file format at header magic error at system vendor product file it says larger file
[OnePlus 7T Guides, News, & Discussion] Mateensiddz:
Invalid sparce file format at header magic error while flash fastboot rom
[OnePlus 7T Guides, News, & Discussion] R800x_user:
Try it again but be patient it'll continue to flash even though that appears
[OnePlus 7T Guides, News, & Discussion] Mateensiddz:
I flash tma patched firmware then bl unlock and flash fastboot rom then phone is power on but I can't flash ota zip file i yse twrp i see here error

Failed to mount system ext (block device required
[OnePlus 7T Guides, News, & Discussion] R800x_user:
What firmware are you on and what are you trying to flash? Are you trying to downgrade?
[OnePlus 7T Guides, News, & Discussion] Mateensiddz:
I am doing convert single to dual sim conversation
[OnePlus 7T Guides, News, & Discussion] aenubis:
TWRP isn't fully supported on this device, has a mounting issue, and with no SD card, I didn't get far with it. There is a lineage recovery that comes with multiple roms that works well.

I couldn't get any files pushed to the device via TWRP, and I tried a handful of versions.
[OnePlus 7T Guides, News, & Discussion] ZackFearheart:
So I got this installed finally.

I'm wondering if I do any of the OTAs available if it will mess anything up? And I wanted to root, but I don't have the modded boot.img anywhere.
[OnePlus 7T Guides, News, & Discussion] miamighost:
so i can just flash this file on my op 7t which is a tmobile version and it will boot up just fine?
[OnePlus 7T Guides, News, & Discussion] aenubis:
I promptly installed HavocOS on mine, and it does OTA updates fine. They shouldn't touch the firmware. I don't think they can modify those partitions OTA. It's a layer too deep, so the OTA updates should only modify the ROMs that run them. There also shouldn't be any unique dependencies, as this firmware is that of another official release, just for a different market.

This isn't a simple "flash."
[OnePlus 7T Guides, News, & Discussion] ZackFearheart:
I wanna flash another ROM on mine (Xtended). But that's the part I'm lost at. I'm also not rooted because the instructions had me confused, I don't have a modified boot.img anywhere
[OnePlus 7T Guides, News, & Discussion] moore.bryan:
Is anyone aware of a method to convert to global without using the MSM tool? I do not have access to a Windows machine, only Linux...
[OnePlus 7T Guides, News, & Discussion] orangepowerpokes:
Suggestion, while on TMO stock be sure to wipe data & cache (in recovery mode) before flashing global rom. Got stuck in bootloader loop, and only fixed by wiping data in recovery and then re-sending flash-all.bat. TU OP, Long Live the 7T
[OnePlus 7T Guides, News, & Discussion] orangepowerpokes:
I'm not the expert, but I'm pretty sure you can do a $>./flash-all.bat in a bash shell. Should work. Android is Linux :)
[OnePlus 7T Guides, News, & Discussion] Msfdfsx:
This message appears *the bootloader is already unlocked* but it's locked
[OnePlus 7T Guides, News, & Discussion] orangepowerpokes:
If thats the case and phone is payed off and has had tmo sim for something like 45 days, then part 1/2 call tmo and request phone be unlocked. Then part 2/2, send a bootloader unlock request to oneplus via their website form, and then wait the 7 days for the fastboot file.
[OnePlus 7T Guides, News, & Discussion] w1ne:
1. Either follow the rules via T-Mobile (paid off and 40 days on the network) or visit this [URL='https://xdaforums.com/oneplus-7t/how-to/t-mobile-free-op7t-sim-unlocking-t4014053']thread[/URL] and get the hook up from our friend (send him some cash, for real I did this and it worked hopefully he keeps up with this for a while!). This will allow you to use the Unlock App to permanently unlock your phone.

The thread is no longer accepting any new inquiries, can someone please point me to a new thread? Person who is doing T-mobile unlock? The T-mobile support did not help. Thanks.
[OnePlus 7T Guides, News, & Discussion] andr3w282:
Hi all,

In Canada - in 2020 purchased a "Factory unlocked" OnePlus 7T from a US retailer (BHPhotoVideo) but was known that it was the T-Mobile unlocked phone. Grabbed a dual sim card tray and it has happily been working with dual sim since.

The product item indicated: "This is the OnePlus 7T HD1907 Model. This model has been factory unlocked by OnePlus before shipping. There are no carrier locks or logos. All updates will be from OnePlus directly. The bootloader is ready to be unlocked. This version will not work on Verizon."

Partner upgraded to OS12 / HD1901_11_F.20 and it blocked/removed dual sim. In the about settings it also thinks the device is HD1901.

Planning to downgrade so doing some research...

Since this was "Factory unlocked" and dual sim was working, does that indicate it has the international firmware? Or since the dual sim is now broken, does that imply it's still the branded firmware? is there a way to inspect?

For rollback to 11, I'm assuming I'll need to follow the unbrick guide, but do I need to convert to global firmware first?

Thanks!
[OnePlus 7T Guides, News, & Discussion] Robinlong:
Hi,

I was in the exact same position as you last week. When I upgraded my supposedly 'Factory Unlocked' HD1907 with no carrier branding to global F.20 ROM through OTA, it also then disabled the 2nd SIM slot and identified itself as HD1901. Looking into it, I realised that many other also had this issue as well.

After much reading conflicting information and debating with myself, I decided to downgrade using the Global MSM Tool for 10.0.16 and then upgraded to 11.0.9.1 following the 'North American' method in this post.

It all went smoothly, my 2nd Sim card slot works now and the device indentifies itself as HD1907 once again.

The only minor snag I faced, was getting the device into EDL mode, it would not enter EDL mode using the physical key combo, neither through 'Reboot to EDL' in Magisk. I had to use the ADB command: 'adb reboot edl' for it to work.