downgrade from Montery to Big Sur
Hi,
I've upgraded my mbp M1, 2020 to Montery a while ago. Since then my battery is much faster empty, I see the beachball to often and I have problems with connecting second displays. So I would like to downgrade to Big Sur. When I'm following one of the many how-to's on the net, they all at one point let me download Big Sur from the app-store. Trying to do so gives me the message that I can't update with a older version.
Does anyone knows this problem and have a solution for me?
Regards,
Erwin
MacBook Pro 13″, macOS 12.1