I'm waiting on my bootloader unlock code in order to do this on my T-mobile Oneplus 8. I've rooted phones in the past, but honestly it's been a few years. I have read a bunch of posts, but the info is pretty vague.
Is this still the correct way to go to international? https://forum.xda-developers.com/oneplus-8/how-to/guide-convert-to-global-t4105885
If I root, will I lose anything? (Google Pay, bank apps, etc...)
Are there any lingering issues I should know about?
The MSM Tool allows an easy way to go back to stock?
Will it be safe to update to new firmware as they come out? Or is there a process for this?
Sorry for sounding like a new newb, just can't seem to find all these answers easily. I think the last phone I rooted was an LG G4 when it came out lol.