if this true
" The HMD firmware update contains the latest DAC profile. Like everybody is saying, the audio is piped via DP ...."
i want to force a Firmware update of the vive pro - "ctrl+shift+home" in steamvr -> devices-> firmware no longer works.
how to force a firmware update ? (reflash) - i think some procces chnage the DAC profile - at the beginning the HMD USB sound works fine ... some days later ( now weeks ago) - not.