To get the most accurate version for your specific Mac, you can check the Official FCP Release Notes .

Edit equirectangular video and monitor it with a VR headset.

Are you looking to a specific issue in this version, or are you trying to update to a newer one?

If your "post" is actually meant to highlight what this version can do, remember that 10.4.2 sits within the powerful 10.4 cycle which introduced:

(Introduced in 10.4.1) A new codec for high-performance RAW editing.

Best if you are helping someone troubleshoot an older system.

Final Cut Pro 10.4.2 "incompatible" - Apple Support Community

Support for high-efficiency video coding and Rec. 2020 High Dynamic Range.