@MiguelLira so the latest .pkg still didnt work, but I dug a bit more today, it turns out its just a collection of bash script that dl the certs... Why they require Rosetta for this is a bit baffling... You can use https://mothersruin.com/software/SuspiciousPackage/ to open the .pkg, then go to the scripts section and sudo run the enroll & zopenmas scripts that are in the postinstall_actions folder. zopenmas opens the Software Update section with macOS 12 Beta as the upgrade now...