denon 4520ci receiver

Hi First post here, and it's a long one. Short version: I'm desperate for a firmware file (USB, network or RS232) for my Denon AVR 4520 receiver. Long detailed version: I made an automatic update (ethernet connection) and it bricked the amplifier so it got stuck in a retry loop and finally...

Hey everyone, I've been lurking here for quite a while and trying to find a good thread that pertains to my particular issue, but I have been unsuccessful. My question pertains to the sound quality and placement of subwoofers in my great room (which will be doubling as a movie room for the...