Big Sur 11.1 says "this version of Mac OS X is not supported on this Platform" although i am using iMac20,2…

[Guest 5T33Z0]

Since I upgraded Big Sur from 11.0.1 to 11.1, macOS won't boot unless I use -no_compat_check Boot-Arg and I don't know why. I am using OpenCore 0.6.5

 

The config works great in Catalina with iMac20,2, since I use an i9 10850K.

For Big Sur I adjusted the csr-active-config Value to FF0F0000 and that's about it.

 

I don't know what that issue should be, but I can't be the SMBIOS since we all know for a fact that 2020 iMacs are supported by Big Sur :D

 

Any idea what might cause this issue?