Thanks for providing us with your answer. I am working with Xcode Version 12.3 (12C33) and overwriting standard architectures doesn't do the trick. Any other good idea?

Hi cbrightpoint, could you please elaborate on your solution? How do you create an xcframework for arm64 and x86_64? Or are you only creating a fat binary with lipo? Thanks, Klaus

Try this answer: https://forums.developer.apple.com/forums/thread/733277