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: [removed]
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:
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:
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: [removed]
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://xdaforums.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. [...]
Last edited: