FWIW, when I regularly used my Director connected to my Mac no other firmware was required. For example, in Amarra Luxe, it automatically revealed Director as the connected DAC.

Also, no other software/firmware was required when my Director was directly connected to my Squeezebox Touch - with the latter showing ‘Meridian Director’ on-screen as the connected DAC.

In both cases, the supplied PSU was not required.

Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
#3: Other stuff