i am currently a Nokia 6 Oreo beta tester, but yesterday i requested for rollback and got the file. but now i want to stay as a beta tester in Oreo. and want to get rid of that nogout downgrade file. which in notification as system upgrade available,, how can i get rid of that file and stay as a beta tester in Oreo. support chat unable to help and told me to post in here. i need some official moderator help please.