As mentioned, it was the Samsung BD player and not the HD-DVD player that has issues with dual layer. All HD-DVDs are DL, and soon they will have three layer. It is not known if the player will play TL, but if it doesn't, then yes, firmware will fix it. The Toshiba player has an ethernet port for firmware updates, but the Samsung player does not... so if they can fix it with firmware, they will have to mail you a disc or make an image available online.
As I mentioned, ALL HD-DVDs are dual layer right now. They have no reason to release single layer since dual layer is "only" 30 gigs... look at all the size issues the 25 gig BluRay discs have.
I have Enter the Dragon on HD-DVD and it looks far better than it does on DVD. Not as good as something like Aeon Flux which is new and a lot of digital effects, or something like Sky Captain which is shot in HD... but it still looks damn good. Lethal Weapon looks decent too. The newer the movie, the better, just due to how well they took care of the film, plus film degrades over time.

