Hi Denon 2910 owners! I downloaded the region-free upgrade and now have ESS 6720-4. Everything seemed fine for a while, then I got the occaisional pause during playback. A few days later the picture froze completely and I couldn't eject the disk. I unplugged and opened the case to see if there was a release mechanism. Couldn't find one so left everything inside untouched. Put it back together and plugged in and the draw opened. OK... one off? No, last night I switched the thing on and couldn't open the tray. I've unplugged and tried everything, but it just won't open. Anyone had similar problems? Does anyone think the upgrade could have caused this? Does anyone know if I've invalidated the warranty by installing the upgrade? This wasn't a £30 DVD player from Tescos.... so I'm a little concerned. FYI... There is a DVD stuck in the player. When I power on the display goes DVD-2910... LOADING.... 0h00m00s If I press Open I get... OPEN.... (10 sec delay)... CLOSE... LOADING.... 0h00m00s "Progressive" is displayed I tried viewing the Firmware details. This worked fine. Whilst in the Firmware menu I pressed Open and got... ERROR01 HELP!