Hi, @matt9 the AppleFWAudioVentura.pkg, for some reason (perhaps due to permissions), doesn't fully work on macOS Sonoma 14.2.
However, it successfully copied /Library/Extensions/AppleFWAudio.kext into the system.
To fully install the AppleFWAudio.kext extension you must:
Fix file permissions: sudo chown -R 0:0 /Library/Extensions/AppleFWAudio.kext/
Manually load AppleFWAudio.kext: sudo kmutil load -p /Library/Extensions/AppleFWAudio.kext
Reboot
Finally, Sonoma 14.2 fully supports my Edirol FA-66 on my DAW.
Thank you again for your support.