This is all rather odd. This is as simple as it gets.

Retype 568, reset DSP33, known good comms cable, so all known state. It should just work. No voodoo magic needed. Something is amiss if it doesn't.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).