With macOS 14.0-14.3.1, we could use the -rtsfbeta boot argument to force the kext to load on an unknown OS version and that did the trick. Starting with macOS 14.4, the kext no longer works as intended. If you go to System Report -> Card Reader, it will display "There was an error loading card reader information" or something along these lines. My device is an RTS522A if that matters.
With macOS 14.0-14.3.1, we could use the -rtsfbeta boot argument to force the kext to load on an unknown OS version and that did the trick. Starting with macOS 14.4, the kext no longer works as intended. If you go to System Report -> Card Reader, it will display "There was an error loading card reader information" or something along these lines. My device is an RTS522A if that matters.