Firmware upgrade. what file to use?

[Urajmal]

Did not try, but will.

It is the same “problem” mentioned here:

Tone Board error with Thesycon 4.11 drivers

Ben, many thanks for your availability and the quick reply. I’m looking forward to see updates (to drivers or firmware) to further improve your TB (which is already an excellent DAC) and remove this noisy tone and use the TB to its best. BTW, did you sort out this issue on Volumio?