[CLOSED] T-Mobile 7T Conversion to International WITHOUT unlocked bootloader/SIM unlock!

[oneplus7t00]

You made sure you have the latest fastboot files right?
https://dl.google.com/android/repository/platform-tools-latest-windows.zip

Did you reinstall your Qualcomm driver with this one?
https://xdaforums.com/t/t-mobile-oneplus-hard-hard-brick.4082663/post-82284169

Perhaps try a new cable and USB port.

I have the latest fastboot files. However Im not sure about qualcomm driver. Thanks u for the idea...

 

[glenb77]

First a big Thanks! to everyone helping with this. My phone was new from black friday sale at b&h photo, 7t tmobile variant. they sold as unlocked etc. however mine at least after setting up would not update and rom was more than a year old. so these tools and threads are a lifesaver. i suspect everyone who bought those for 300 on BF probably in same boat.

Maybe some of the problems i had and fixes might help someone else. first: i am linux user mostly, but use windows. i had terrrible time with drivers. the most recent cab file posted for qc drivers, i could not get to install, kept getting error from powershell and cmd shell. i could not get a fastboot working, kept getting searching for devices. w/oneplus installer and an older qualcomm installer. i got fastboot working well with google android usb driver for pixel. i got the msm tool to recognize device by installing inf file separately within the cab file of recent qualcomm drivers posted here.

the msm tool part worked fine and phone got back to bootloader. flashing i got errors like many 'can;t flash to critical partition' 'partition not found'. re-running script several times did not change anything.

i wound up flashing from linux. made two small changes in script and it worked. but when it rebooted. logo changed as expected but phone had no network at all and then after first few screens would reboot and it took a long time to coax it back to bootloader mode. second time i flashed it worked good and phone seems fine. i updated and locked the bootloader as suggested. if i am going to root it, i guess i could do that with the twrp file just booting once and install magisk.

i think the problem on the flashing is the reboot to bootloader after first few flash files. it may be better to break it into two scripts. because if you don't get that reboot to the screen with chinese writing and english, it is not going to work anyway. i don't know if that is fastboot.exe file or not, i used the most recent one.

but if someone is totally stuck. once the msm part is done, they could just use a linux live usb from arch or ubuntu, install android-tools and then copy over the script making sure to open script in editor and save as unix file not windows text and the flashing will work.

i'm leaving the corrected script for linux. for me with fastboot, i need sudo and i set up sudo for no password. but someone might want to take that out. had to give a .txt extension to attach. so just make it executable 'chmod +x flash.txt' and run in dir with extracted img files. like ./flash.txt

anyway thats how i got it working. thanks again for the time and hard work of guys that made these guides

 

[orangepowerpokes]

First a big Thanks! to everyone helping with this. My phone was new from black friday sale at b&h photo, 7t tmobile variant. they sold as unlocked etc. however mine at least after setting up would not update and rom was more than a year old. so these tools and threads are a lifesaver. i suspect everyone who bought those for 300 on BF probably in same boat.

Maybe some of the problems i had and fixes might help someone else. first: i am linux user mostly, but use windows. i had terrrible time with drivers. the most recent cab file posted for qc drivers, i could not get to install, kept getting error from powershell and cmd shell. i could not get a fastboot working, kept getting searching for devices. w/oneplus installer and an older qualcomm installer. i got fastboot working well with google android usb driver for pixel. i got the msm tool to recognize device by installing inf file separately within the cab file of recent qualcomm drivers posted here.

the msm tool part worked fine and phone got back to bootloader. flashing i got errors like many 'can;t flash to critical partition' 'partition not found'. re-running script several times did not change anything.

i wound up flashing from linux. made two small changes in script and it worked. but when it rebooted. logo changed as expected but phone had no network at all and then after first few screens would reboot and it took a long time to coax it back to bootloader mode. second time i flashed it worked good and phone seems fine. i updated and locked the bootloader as suggested. if i am going to root it, i guess i could do that with the twrp file just booting once and install magisk.

i think the problem on the flashing is the reboot to bootloader after first few flash files. it may be better to break it into two scripts. because if you don't get that reboot to the screen with chinese writing and english, it is not going to work anyway. i don't know if that is fastboot.exe file or not, i used the most recent one.

but if someone is totally stuck. once the msm part is done, they could just use a linux live usb from arch or ubuntu, install android-tools and then copy over the script making sure to open script in editor and save as unix file not windows text and the flashing will work.

i'm leaving the corrected script for linux. for me with fastboot, i need sudo and i set up sudo for no password. but someone might want to take that out. had to give a .txt extension to attach. so just make it executable 'chmod +x flash.txt' and run in dir with extracted img files. like ./flash.txt

anyway thats how i got it working. thanks again for the time and hard work of guys that made these guides

I run linux and windoze. All my adb stuff seems to be in windows, so that's where I went to adb this phone. I went to the bookloader unlock method. Took exactly one week to get the unlock code, but had little trouble unlocking the phone and flashing global rom.

Fantastic phone for $300 @B&H. I always saw good things about oneplus but never had one. I didn't see any great deals on the Pixels (P2 owner), and decided to bite on the oneplus 7t deal. I think OOS is good and I'll stick with it, but may root in near future >> wake time is way to short in OOS, and would actually like 'always on' disaplay. However, OOS has a double-tap-to-wake setting +1 for that.

 

[jeffrimerman]

I have the latest fastboot files. However Im not sure about qualcomm driver. Thanks u for the idea...

I think I had the same issue but it was because I was getting errors and kept thinking I need to put the phone back into fastboot mode in the middle of the flash-all.bat. I made sure to put my phone back into usb debugging since the phone was able to boot into a faulty semi working rom. Then went back into fastboot, made sure to "fastboot devices" to make sure it's communicating. The ran flash-all.bat again with 10.0.12 and it worked fine. I got the failed "reserve" and lots of error "sparse" or something over and over but it was still "okay" as it loaded files. Then it worked fine. I had a separate adb folder for each 10.0.8 10.0.12 10.0.13 and just decided to do 10.0.12. I think the qualcomm driver is for the msm tool to function in EDL mode but it doesn't hurt to make sure you have it but I think you have to go back into EDL mode to install it, I forget. Are you able to boot up into the rom with all the fails?

 

[oneplus7t00]

I think I had the same issue but it was because I was getting errors and kept thinking I need to put the phone back into fastboot mode in the middle of the flash-all.bat. I made sure to put my phone back into usb debugging since the phone was able to boot into a faulty semi working rom. Then went back into fastboot, made sure to "fastboot devices" to make sure it's communicating. The ran flash-all.bat again with 10.0.12 and it worked fine. I got the failed "reserve" and lots of error "sparse" or something over and over but it was still "okay" as it loaded files. Then it worked fine. I had a separate adb folder for each 10.0.8 10.0.12 10.0.13 and just decided to do 10.0.12. I think the qualcomm driver is for the msm tool to function in EDL mode but it doesn't hurt to make sure you have it but I think you have to go back into EDL mode to install it, I forget. Are you able to boot up into the rom with all the fails?

I can't boot into global ROM. It boots to tmobile rom. I get :
Rebooting into fastboot < waiting for any device > ....The phone displays "简体中文 繁體中文 English", what do I do in this step?
I tried disconnecting phone from laptop and choosing "english" and starting tmobile rom and enabling usb debugging. and connecting back to laptop. Still no luck. It just won't load global ROM

 

[jeffrimerman]

I can't boot into global ROM. It boots to tmobile rom. I get :
Rebooting into fastboot < waiting for any device > ....The phone displays "简体中文 繁體中文 English", what do I do in this step?
I tried disconnecting phone from laptop and choosing "english" and starting tmobile rom and enabling usb debugging. and connecting back to laptop. Still no luck. It just won't load global ROM

I had that same issue i was still seeing the tmobile splash screen(I think that's what it's called). But when I got into that rom I put the phone into usb debugging. Are you doing that? Then when you run flash-all.bat you just sit there and do nothing. It shouldn't take 30 min so then something is wrong at that point, but did you put it back in usb debugging?

 

[oneplus7t00]

I had that same issue i was still seeing the tmobile splash screen(I think that's what it's called). But when I got into that rom I put the phone into usb debugging. Are you doing that? Then when you run flash-all.bat you just sit there and do nothing. It shouldn't take 30 min so then something is wrong at that point, but did you put it back in usb debugging?

yes I turned on USB debugging.

 

[oneplus7t00]

yes I turned on USB debugging.

I don't think this method is working for me. Ss there any other way of flashing global ROM ?

 

[jeffrimerman]

I don't think this method is working for me. Ss there any other way of flashing global ROM ?

Did you try the different global roms to see. 10.0.12 worked for me but maybe they all would have. I just know when I decided to not touch anything it happened tobe 10.0.12 that was what I tried. In your fastboot state you can flash run twrp recovery and maybe flash that way? Someone else can say better.

 

[disrupt]

I can't boot into global ROM. It boots to tmobile rom. I get :
Rebooting into fastboot < waiting for any device > ....The phone displays "简体中文 繁體中文 English", what do I do in this step?
I tried disconnecting phone from laptop and choosing "english" and starting tmobile rom and enabling usb debugging. and connecting back to laptop. Still no luck. It just won't load global ROM

I faced and solved the same problem today.

You must be using Windows and likely on an AMD platform. The problem is after the `fastboot reboot fastboot` step, it's supposed to continue right at the "简体中文 繁體中文 English" screen. If you chose English->Advanced->Reboot Fastboot, then it goes into the "original" fastboot which cannot flash the critical partitions. However, the "temporary" fastboot has a different USB device ID and your system likely doesn't have the driver.

This can be verified by checking Device Manager while at that screen. You should see a 18D1:4EE0 device with no driver installed.

Solution is either a) find & install a compatible driver for the 18D1:4EE0 fastboot device, or b) flash under macOS or Linux. I found it annoyingly hard to find a driver that installs, so I ended up doing the latter.

 

[disrupt]

I flashed 10.0.3 globalIndia ROM by the way, but any version should work.

 

[oneplus7t00]

I faced and solved the same problem today.

You must be using Windows and likely on an AMD platform. The problem is after the `fastboot reboot fastboot` step, it's supposed to continue right at the "简体中文 繁體中文 English" screen. If you chose English->Advanced->Reboot Fastboot, then it goes into the "original" fastboot which cannot flash the critical partitions. However, the "temporary" fastboot has a different USB device ID and your system likely doesn't have the driver.

This can be verified by checking Device Manager while at that screen. You should see a 18D1:4EE0 device with no driver installed.

Solution is either a) find & install a compatible driver for the 18D1:4EE0 fastboot device, or b) flash under macOS or Linux. I found it annoyingly hard to find a driver that installs, so I ended up doing the latter.

Thank you very much. Appreciate it

 

[duy_ng]

Hi there, I just got my wife a OnePlus 7T and want to follow this instruction to get dual sim functioanloty with the global ROM. However, I am stuck at step 2. I enter EDL mode, connect USB and hit start in the MSM Tool - okay so far. But since over 1400 seconds the MSM tool shows "Param preload" and still counting upwards.

I have the feeling I am stuck in Param preload and have no idea what I should do. Can anyone here help me out?

Happy holidays, by the way!

Edit: I found the issue. After installing another Qualcomm driver from this post here, it worked out for me: https://xdaforums.com/t/msm-tool-7t-need-testers.3994931/#post-80739839

 

[giusseppe_c]

@floopidze for now, nobody managed to successfully sim unlock a device after unlocking the bootloader this way.
Having the bootloader unlocked is indeed helpful to try to disable sim lock unofficially. But I don't think many people are interested in it

Im interested in SIM unlock muy Oneplus 7T with international firmware installed. Please help!

 

[somgoozy]

I'm pretty new to all of this and I'm stuck on step 3. I have installed almost every driver in this thread and it still says "< waiting for any device >". Does anyone have either a list of drivers that I may have missed, directions to undo my progress up to this step, or just general advice?

*edit*

A few quick tips

Hello everyone!!!

I just wanted to throw in a few things to try if nothing seems to be working. (Trust me I had problems at almost every step). First of all I wanted to thank the great guys who made this and keep supporting it and continue to help everyone. Second I know this ins't organized and I know this seems very stupid, however I wish I could have read something like this to save me hours of crying and stress. I know it seems silly to have such basic fixes, however I know firsthand that they can be useful. I will go back and reorganize all of this in a couple of days when I have more time. I put this together to hopefully save someone a bunch of frantic XDA forum surfing to try to find the simplest solutions. I took answers from all different websites to make this, I just put them all in once place and tried to make it look pretty.

I can't get out of the "Start" "Fastboot" "Recovery mode" and "Off screen!!!"

If you get to this point you've missed a simple step or you are just confused. Turn off the phone and follow the normal EDL steps and redo the step with the MSM tool. I know it seem silly to be having this problem, but I somehow (not knowing enough) thought this was a problem and got stuck for a couple of hours trying to fix it.

How I got to this problem

I know it seems like something is very wrong, however let me explain why I got to this point. I had accidentally clicked "Use Lite Firehouse" in MSM and I had stopped it halfway and needed to redo it. However, I thought I couldn't get back into EDL mode because I couldn't get it to stay out of that screen. However after a lot of panicking (5 hours) and posting everywhere I realized all I had to do was go back into EDL mode and restart the MSM tool

The MSM tool can't find my phone!!!!

What I did to fix this was continuing to attempt to get my phone into EDL mode, just keep trying. I will try to explain it in the way that made the most sense to me.
1. Turn off your phone
2. Unplug the cable connected to your computer
3. Launch the MSM tool
4. Hold down the volume up and down button with one hand, while you plug the cable back into the phone
5. Continue to hold the buttons until the MSM tool connects to your phone.

I remember having this problem but I remember having to install another extra driver however I can't think of what it was at the moment. I will add to that once I figure it out

After putting my phone into EDL mode my phone screen is black and it won't respond to anything I do

Hold the power button and volume up for about 15 seconds until the phone restarts and shut it back down and try to connect the phone to the MSM tool again.

When I put in the command "fastboot flashing unlock-critical" it gets stuck at "waiting for any device"

This means that you are missing yet ANOTHER driver. I was stuck on this problem for a solid couple of hours. Here are a few things I did, some of them worked for me some didn't. I will add pictures at a later date

1. Google search for the OnePlus driver installer and install that.
2. Go to device manager and your phone should be listed as "Android" or something along those lines.
3. Click on the device then update drivers, navigate to the programfiles (x86) folder and to oneplus USB drivers and try doing a manual install from there

I had also downloaded a bunch of random drivers from different websites and tried them all until one finally worked. I will look for those and add them here tomorrow.

Another thing to note, I had also had to disable windows driver checker, by following this link (I can't post links yet, will add soon)

When I go to install the firmware with the command "flash-all.bat" It goes really really slow and it gets stuck

Make sure you have your phone plugged into a USB 3.0 port! After switching mine around, that knocked out one problem.

Halfway through the flash I get a pink t-mobile screen and it boots and my wifi doesn't work, and the command line is stuck on "waiting for any device"

A few other people in this post have had these problems, and this is what I did to fix it. Everything I have seen says just to try it again. While simply running through the process again may fix it, this is what I did.

1. Hold down the power button to shutdown the phone
2. Turn it back on and when you get to the screen that says "press the power button to pause booting" do that. Press and hold the power button to stop booting and you should return to the green "start" screen.

This should allow you to get back and the flashing should resume, you may have to do this a few times

My phone shows three languages to select from and some options

Leave the phone alone, it will do its thing.

I think I covered everything that I ran into so far. I will go back and add pictures and links and whatnot when I can. Thanks for reading my post!!

One problem I did run into was that google messages wont work with RCS anymore, is there a fix for that?

The only thing I haven't done is manually update the driver, and that's because it says that there is a problem with the hash and I haven't found a way to get windows to ignore it

*edit 2*
I found a way to make my computer accept the driver. You go to cmd and type " bcdedit /set testsigning on". Then, the part that I kept missing, YOU MUST RESTART YOUR PC. It works perfectly for me now. Thanks!

 

[vikumRB]

Bought the device unlocked from ebay and converted to international, thanks to you guys. Relocked the bootloader too. Btw I'm from Sri Lanka and the device works like a charm.

 

[guliver365]

I think I got into problem I followed this guide I ran the MSM download tool got a green line it was completed did
fastboot flashing unlock_critical
got 10.0.9-GLOBAL-OnePlus7TOxygen_14.O.11_OTA_011_all_2003271951_3cf84b1dee-FASTBOOT.zip
Rebooted in fast boot
I did the flash-all.bat
from that the issues
got tons of errors
Writing 'reserve' FAILED (remote: '(reserve_a) No such partition')
fastboot: error: Failed to boot into userspace fastboot; one or more components might be unbootable.
Invalid sparse file format at header magic
Sending sparse 'system' 1/3 (784720 KB) OKAY [ 17.176s]
Writing 'system' FAILED (remote: 'Partition not found')

Sending sparse 'product' 1/2 (785436 KB) OKAY [ 17.266s]
Writing 'product' FAILED (remote: 'Partition not found')

From this it rebooted with the T-mobile pink logo
but after startup got NO MODEM neither wifi or cell
I guess I need help big time ....?

 

[guliver365]

In addition, you'll need these drivers for windows too, in order for the phone to be recognized when it reboots into fastbootD.

https://dl-ssl.google.com/android/repository/latest_usb_driver_windows.zip

FastbootD is when the phone reboots for the firsttime after you run flash-all.bat, you get the screen saying hold the power button to pause booting, and then it brings you to the screen with the oneplus logo, and 3 language choices. Without these drivers it never gets recognized and can't continue.

Between the OPS instructions and the ones posted by Vallan, i was able to do this yesterday on the Tmobile unlocked sim phone that b&h had for 299 on Black friday, works great and it auto updated itself to the latest OTA from oneplus. After doing that update, do a factory reset on it and then you can re-lock your bootloader if you want to.

Finally by reading the whole thread again I ran into this one and sure enough tit was the solution. When it reboot in fastbootd go to device manager on the yellow icon where it says HD1907 click on it update drivers from the file downloaded at

https://dl-ssl.google.com/android/repository/latest_usb_driver_windows.zip

Now the phone boot international and got modem.I probably Have to put magisk to get all the banking function and Netflix working

 

[Jason_collett]

Stupid question. I went to international version on 7T but did not carrier unlock with the T-Mobile unlock app. Do I need to go back to TMobile software to unlock,or is there a way to do it from international? Sorry got excited and did a little premature flashing.

 

[Inf0tec]

Here is a patched MSM download tool for TMobile OP7T.
It will bypass the need to sim unlock before unlocking the bootloader, and will also bypass the need of an unlock token file from OnePlus (hence skip the wait period of 1 week to get the privilege to unlock). It will NOT sim unlock the phone.

1) Download the patched MSM download tool: https://drive.google.com/file/d/12y3lO0wIgb2_LSDeVw9x_2C_HjbgZlb_/view?usp=sharing

2) Run the tool, connect your phone in EDL mode (see below how to do it if you don't know), ensure the "sha256 check" is NOT checked, click the Start button and wait until it's completed.

3) The phone will show a red warning saying "device is corrupt", just ignore that and wait some time. It will fallback in fastboot because it's not able to boot. Now run the following fastboot command:

fastboot flashing unlock_critical

4) Bootloader is now unlocked. Update your fastboot executable, otherwise you'll encounter errors and modem issues. Download it here: https://dl.google.com/android/repository/platform-tools-latest-windows.zip. Then boot the phone in fastboot mode, and follow the steps 7, 8 and 9 of this nice guide : https://xdaforums.com/oneplus-7t/how-to/guide-t-mobile-brand-conversion-to-t4019495


How to enter EDL mode:

I have tried the procedure several times, and I am getting the same 2 errors every time:

1.
fastboot flash reserve reserve.img
Sending 'reserve' (259328 KB) OKAY [ 5.521s]
Writing 'reserve' FAILED (remote: '(reserve_a) No such partition')
fastboot: error: Command failed

and 2.
fastboot reboot fastboot
results in the phone rebooting into the T-Mobile branded OS, with broken modem.

If anybody seen this kind of errors, please help!