Aaron Hughey , via OnePlus 8 T-Mobile , Jun 21, 2020 : I now no ill never get updates thanks to T-mobile. Should have never traded in my 1+6. But what do I have to do to download and install updates. Do I just root the device or?
Android450 , Jun 21, 2020 : Here you go! https://forum.xda-developers.com/oneplus-8/how-to/guide-convert-to-global-t4105885
IgorT76 , via OnePlus 8 Pro , Jun 22, 2020 : The latest update 10.5.10 is available for 8 5G T-Mobile.