Does anyone of you Denon GURUS have the firmware update info for Denon AVR-5805. I heard they had a HDMI 1080P upgrade for this model. It may have required sending unit to Denon but I"m game at attempting it even if it requires removing lid & connecting to internal jumpers. I remember someone on a earlier forum saying they serviced Denon's. If this person could provide any info on this it would be much appreciated. Thanks