Hi Husky,
Both your model and mine (34010 and 54250 respectively) appear to have the most recent bios 0023 released 12/24/2013. Are you sure you have bios version 24? I wonder if it was released and later taken back?
I employed your temp. fix - i.e. putting audio through a TV and then on to the receiver. My TV does not to 5.1 passthrough so not ideal, but better than nothing.
Thanks again for your help
peter