Maybe try and read on why....
Did you actually read the post about the (here's the hint) BETA release of android 11?
You will get it, once it's released by OnePlus after a few months.
It's a really simple concept. Android 11 comes after android 10
Please, use the latest beta thread for questions and comments, read the first post: Here
Use the search engine before opening a new thread: Search
Read the forum rules: Rules
Best regards, Cervantes, Forum Moderator
Shot on OnePlus March: Historic #Cars
by otto2, 2021-03-01