Have been playing around with getting this to work this afternoon. I'm on a Mac Mini M2 PRO + Ventura 13.2. I wasn't able to make the installer work, unfortunately. So I used 'Suspicious Package' to extract the AppleFWAudio.kext file from the installer. I've dabbled for years in the Tonymacx86.com world, so I am somewhat used to doing this sort of thing. I first went into Recovery mode & set the Startup Security Utility > Security Policy... Allow user management of kernel extensions... as recommended. Next, did a manual install to /Library/Extensions. Finished up by using one of my old CustomMac tools, Kext Wizard to execute a "Repair Permissions" (disk permissions on the disk), followed by "Rebuild Cache" to rebuild system kext caches. Rebooted. Behold the System Report shows my Onyx-1220i audio mixer with integrated FW audio interface: ...but nothing shows up in the Sound System Settings option. I have another audio interface now that is my primary interface, but I could sure use the extra input channels with doing a bigger session & need more than 8 channels of input (other interface has 8 mic pre's). If anyone is following along who has gotten this to work on the M2, I'd love to hear from you! Thanks in advance!

If you have any familiarity with the 'underground collective who builds Mac clones using regular PC parts' - you may have heard of an app called Kext Wizard. It's used to do just exactly this sort of thing (properly install kexts & then rebuilds permissions).