On November 20, 2011 at 16:14, zaspi said...
Just aquired a DENON AVR-4311 and no matter what I try, cannot get to display the #@#%! upgrade ID...
Try the AVS forums. They have discussion areas devoted specifically to Denon receivers, with some very well-infromed denizens. In fact, I think one of them works for Denon.
