Can't boot into installer with OC configuration that used to work

So I have this ThinkCentre M93p Tiny that I did successfully install Big Sur on like 2 years ago. I then installed another OS on this machine and saved the OC folder with the working configuration just in case. I am now trying to install it again. First I tried Monterey and changed the Type to iMac16,2. Since it did not show me a black screen after the verbose output, I thought trying the old Big Sur configuration that used to work and I got the same problem. Since I upgraded the CPU from an...

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Author: jclsn