joethom wrote:Hi Jeff, thanks for the response. I've enabled reduced security from recovery mode and tried re-installing the driver multiple times. I'm not getting anything shown as being disallowed in Privacy & Security and the installation seems to be successful. However I still get no option in sound settings to use the UCX.
Reduced Security mode is not needed for the v4.xx DriverKit driver version. Since you did that already, maybe it helps to try the driver v3.28b2 which still uses the kernel extension method.
https://rme-audio.de/downloads/driver_usb_mac_328b2.zip
Install that one, unblock in Privacy & Security and check that it's working. Update the UCX internal firmware with the RME Flash Update Tool. Then you can try the v4.09 driver again (if you want). Installing that driver will uninstall the v3.28b2, and vice versa.
Regards,
Jeff Petersen
Synthax Inc.