"Final-Cut-Pro-10.5.4-MAS.dmg" is the disk image file for Final Cut Pro version 10.5.4 , specifically the version distributed via the Mac App Store (MAS)
Final Cut Pro 10.5.4 is not an "exciting" update in terms of new creative tools, but it is a "must-have" for technical reliability. If you are experiencing export glitches or playback stutters with HEVC media on an older macOS version like Catalina or Big Sur, this specific build is the definitive fix.
To run Final Cut Pro 10.5.4, you'll need:
