In the next few days those using M1 Macs will be updating to Big Sur 11.5, blissfully ignorant of how, as an admin user, their Mac could refuse to update. Because now, in addition to regular users, admin users and root, there’s another class of admin user: the Owner. Let me explain.
Just something to be aware of.
So, to summarize…
he’s complaining about problems associated with a beta firmware update with beta software and two different versions of macOS 11 on an M1 machine.