Android 11 is the latest version pushed out by OnePlus.
While there is a /e/OS for the other versions of OnePlus 7T (example: HD1905) there might be enough of a difference that the eOS doesn’t load with the T-Mobile version. If I’m wrong please let me know.
Regain your privacy! Adopt /e/ the unGoogled mobile OS and online services
Looks like it may be possible if first you convert your phone to OOS11 Global version. Have a good read of this for some pointers:
Hi @chrisrg I’m not sure that’s going to help the OP. According to the LOS documentation, the HD1907 is not on the list of supported devices (bottom right of page):
https://wiki.lineageos.org/devices/hotdogb/
Of course, this could be a YMMV (“your mileage may vary”) situation and if the OP is up to trying… maybe we’ll all learn something new! 