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

Search This thread

Criston

Senior Member
Nov 19, 2014
949
163
I have just updated from OOS 10 to OOS 11.0.9.1 and facing a weird issue of frequent network drop which causes the device to heat up does anybody else facing the similar issue?
 

orangepowerpokes

Senior Member
Sep 3, 2016
114
32
Thanks OP. TMO OOS 11 > Global OOS 10.0.9 > updated OTA to Global OOS 11 > Relocked bootloader > Factory reset. Testing for the day and everything just works.

So down the road, should this be considered good to flash LOS or any other ROM?
 
Last edited:

squidblaster

Senior Member
Jun 6, 2013
59
14
Cant recognize my oneplus 7t in fastboot devices when at fastboot screen or device manager when attempting to boot to edl. Msm tool does not connect either. I believe drivers and platform set up correctly. My other oneplus phone connects fine - Qualcomm 9008 and fastboot devices. The device that doesn't connect is bootloader locked and usb debugging and adb is not enabled. phone wont boot past fastboot. Any ideas?
 

HueyT

Senior Member
Apr 3, 2014
4,730
2,148
New Albany, IN
OnePlus 7T
Cant recognize my oneplus 7t in fastboot devices when at fastboot screen or device manager when attempting to boot to edl. Msm tool does not connect either. I believe drivers and platform set up correctly. My other oneplus phone connects fine - Qualcomm 9008 and fastboot devices. The device that doesn't connect is bootloader locked and usb debugging and adb is not enabled. phone wont boot past fastboot. Any ideas?
Try different laptop, cable, usb port, etc
 

squidblaster

Senior Member
Jun 6, 2013
59
14
So I
Try different laptop, cable, usb port, etc
Finally got it to start running on a different pc/laptop and failed halfway through. Can't seem to get it connect to any of my computers now.

Now I am getting download upgrade failed - please check download flow. It is also bootlooping when I try to enter edl mode and plug in device.
 

HueyT

Senior Member
Apr 3, 2014
4,730
2,148
New Albany, IN
OnePlus 7T
yea. I'm not sure.

It was working fine till I screwed it up flashing. I'll probably try to fix it later. For now I have given up 😮💨
Did you try this (BL will be locked as it's OEM for HD1907, but better than dead phone)

 

squidblaster

Senior Member
Jun 6, 2013
59
14
Did you try this (BL will be locked as it's OEM for HD1907, but better than dead phone)

Yea thanks for trying to help tho.
 

mahadnadeem2014

New member
Oct 1, 2019
1
0
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:
Code:
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://forum.xda-developers.com/oneplus-7t/how-to/guide-t-mobile-brand-conversion-to-t4019495


How to enter EDL mode:
Which files are modified in the rom to brick device ?
Can be made for oneplus 8?
 

orangepowerpokes

Senior Member
Sep 3, 2016
114
32
Buy a cracked hd1907 and switch out motherboard as usbc maybe bad
I tend to think that's overkill. Not sure how many times I've thought I bricked a phone and suddenly out of the depth of darkness, shizam back in business.

It took me a lot of attempts to get my 2nd (backup phone) 7t into edl mode and flash. Whether I wasn't using the latest adb version, or couldn't flash with the latop I was on, or the usb cable, or not immediately clicking the 'refresh' box after running the MSM tool (only a few secs to flash once in edl mode) & disabling the md5 verification. It's a bit tricky, but defiantly possible! I don't think it's hard to get the phone in edl mode, but harder to make that connection you need and make it begin the flashing magic.

My goal was lineageOS in the end. But after finally getting the global rom using this method on the 7t, I realized (as the OP states) this method does not sim unlock the phone. I should have known I needed a permanent unlocked bootloader to flash Lineage, and in order to get an unlocked bootloader, I needed the blessing from TMobile. I finally got the blessing from TMO, and the TMO app sim-unlocked my 7T, so I'm now in the 7 day wait for the unlock token from Oneplus!

Some people like escape rooms... I like doing this instead :) Converting a TMO OnePlus 7T to global rom or (now) even better, another ROM is just as entertaining. Got to be persistent.

This phone still rocks in 2022. Only thing IMO a 2022 phone offers that we don't have is 5G, which is, ya know, a whole lot of marketing. The 7T is the best phone ever.
 

Top Liked Posts

  • There are no posts matching your filters.
  • 1
    Yep, hd1901.f17 (indian variant) or hd1903.f17 (EU variant)
    Have u faced issues like green tint Max brightness and network drops?
    1
    So u have never faced these issue on ur tmobile hd1907 variant converted to hd1901 ?
  • 16
    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:
    Code:
    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://forum.xda-developers.com/oneplus-7t/how-to/guide-t-mobile-brand-conversion-to-t4019495


    How to enter EDL mode:
    [...] Getting into EDL mode took me a while because I'd never had to do that on any previous phone way back when I used custom ROMs. Note that in EDL mode the screen is blank, and apparently it times out after 10 seconds. So the way to do it is to power off the phone and disconnect the USB if it's connected. Then press both volume UP and DOWN at same time, then while holding those buttons down, insert the USB which should already be connected to your computer. The best way would be to have the MSM program already open on your PC, then put phone into ELD mode. I had my left hand holding the volume buttons on the phone (press hard with two fingers to be sure), used right hand to plug in USB, then right hand on the mouse to work MSM. Once the USB is plugged in, watch the MSM window and look for it to say "Connected". Then just click the Start button. You can then release the volume buttons on the phone and let MSM do its thing. [...]
    4
    so I'm gonna write my own summary hoping it fills any gaps. thanks to everyone else for providing very useful information and thanks to OP for putting in the work for figuring this out.

    1. first and foremost, make sure all of your drivers are correct. this is a must. boot into fastboot and EDL modes and check your device manager to make sure their drivers are properly installed. I had issues with getting the fastboot driver to work on my desktop but was picked up easily on my laptop. i still ended up pursuing fixing the driver on the desktop but no drivers from anywhere would work. i ended up going into windows update and installing the optional driver updates--some of these might be named samsung, but install any that sound related to android. this finally fixed the fastboot driver error on my desktop. the fastboot driver on my device manager was called "kedacom USB device">android bootloader interface

    2. I used the "all in one tool" available on this forum to get into EDL mode but you can do it manually too, it's not hard. as mentioned before, you will need to hold down the buttons then click start in MSM. If you release the volume buttons early it will kick you out of EDL--well at least for me. you can release the buttons once MSM starts. MSM took me about 130 seconds. This was over USB 3.0 port. I had no issue with USB 3.0 ports throughout the process but YMMV. At the end, it will give you a bootloader unlock menu and ask whether to unlock it or not. no one mentioned it before, but you have to manually click yes to unlock it. you will be kicked back into fastboot mode with the bootloader status as unlocked.

    3. I downloaded 10.0.9 global rom package, because i'm planning to relock the bootloader after. if you plan to keep bootloader unlocked just update to latest zip available. if you're planning to relock, make sure the zip isn't the latest version as you won't be able to OTA update from the OS if it's latest version (until there's another update). Copy the contents of the global rom zip into your ADB folder. The ADB tools inside the global rom zip might be older so I decided to keep the files in the ADB folder as is (i.e. the ones linked in OP) and not overwrite with the ADB files from the global rom zip. I went to CMD into the adb folder and ran the flash bat command. The first time it went to the "waiting for device" stage but did not go back into fastboot mode to continue, instead went to pink TMO bootscreen and eventually into the OS. I manually went back into fastboot mode via recovery mode and tried again. This time it went through it all (ignore the errors as mentioned in the CMD screen)

    You're done here if you want to keep the bootloader unlocked

    4. If you plan to relock bootloader, go into settings menu and look for update. you should get one, download it and install it. Once installed, factory reset and let it boot into OS. Then go into fastboot mode and relock bootloader with commands below

    check to make sure phone is being picked up by bootloader

    Code:
    fastboot devices

    command to relock bootloader

    Code:
    fastboot oem lock

    I went back into the fastboot menu to make sure it's locked and did another factory reset

    I can confirm that play store shows as certified and google pay cards can be added but I have not confirmed anything beyond that or checked netflix

    i hope this helps somewhat, good luck!
    2
    Tested, 100% working.
    No risks, if there is an error you can just flash the stock TMO msm and you'll be 100% stock and working.
    This is to bypass the need to sim unlock and to bypass the wait period of OnePlus. But this does not sim unlock the phone.
    2
    I'm not sure. In my case, I had a driver that appeared to be correct but the MSM tool would just hang. If you have the phone running in edl mode you could check the driver version in device manager but I'm not sure how to verify which one is the correct one.

    This is the driver I ended up using.

    https://drive.google.com/file/d/0B0Fg_uwj-hWoYndYTTMwQUZ2RlU/view

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


    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.
    2
    Tested, 100% working.
    No risks, if there is an error you can just flash the stock TMO msm and you'll be 100% stock and working.
    This is to bypass the need to sim unlock and to bypass the wait period of OnePlus. But this does not sim unlock the phone.

    Confirmed! Presently bootloader unlocked and global rom installed. Will receive my unlock token on Friday......hee hee.
    Wanted to say thank you for putting this together and making it dummy proof.