I am still actively investigating this. At the moment I am focusing on the AXE FX III, but since we are seeing these issues on both products, once I find a solution for the AXE FX III there is a high probability I can use the same solution for the FM9.Any updates on this? I received my FM9T a few nights ago. First night it was great, then all of a sudden, no system audio transmitting through the FM9T. I tried both audio drivers, new and windows 7/8 (I'm Running Windows 11, ugh) and it works for about 3 seconds, enough to recognize and run a test on the audio via windowsn, then nothing. Tried via Headphones and XLR - no difference. It also does not like one specific USB port in my computer..frustrating. my FM3 has no issues at all.
Unfortunately I cannot provide an ETA at the moment.