Also credit to the mysterious anonymous rogue @ D T.
Please show some love if you can. @themustached is a great guy.
You can donate here - http://paypal.me/dustinwann
And here http://paypal.me/dustinwann
Here is the tool needed to flash the Oneplus 7 Pro - TMobile version back to stock.
If you converted to international already and want to go back or recover from brick, this is for you.
TMO MSM rar - Mega
The same steps apply to this as the other MSM tool.
You can follow the guide from my other post if needed.