I bought one of the last Onkyo HD DVD players. While my home theater is being planned I've been using it with a temp projector - Panasonic AE900. Playback seems pretty good although when I first used it I noticed all sorts of weird artifacts - seemed to be perhaps de-interlacing errors where I'd see a flash of what seemed to be interlaced scan lines during shot changes.
Do I need 4.0?
How do I get a hold of that firmware?