Good to know. Makes the 2809 that much of a better AVR. I was under the impression it wasn't. I remember reading a lot at the time (Christmas) and although it has an RS232 port it wasn't intended for user upgrades, or even firmware updates (although there was some talk about "un-official" bug fixes from the Denon guy over at AVS). There was also nothing in the manual about it, which, admittedly, is hardly proof of anything.