DUDU-Meng If you are referring to upgrading the firmware, simply extract the files from the 7Z compressed package to a USB flash drive and insert it.
DUDU-Meng Mitz Please do not double post these topics in unrelated threads. You flat out say usb audio doesn't work, but don't give details like model number system version number etc. And has the protocol selection even been checked?
Mikescotland Mitz it's experimental. Always was. So no, not critical. Trying to get answers is fine but posting in a thread that has nothing to do with your problem is just nasty
