I believe I found the firmware upgrade thread on AVS mdrew ( Denon 3808/4308/5308 Firmware Tracking Thread). The only problem I have is that I don't have an Internet connection in my home theater room so updating the firmware after hooking it up and setting everything up wouldn't work for me. Can't I just plug it in upstairs by my computer/router and update the firmware straight out of the box before it's hooked up to anything? I would also hook it up to my TV in the computer room so I could see the on-screen display.
