Originally Posted by miata
This only applies to SD DVDs. I just tried my copy of the Troy DVD on the HD-A1 and it reverts to 480p, so Troy is copy protected.
I tried two other SD DVDs and I was able to switch between 480i, 480p, 720p and 1080i via component (Red/Green/Blue). I did have to press STOP twice to stop the movie then push the RESOLUTION button then press PLAY to start the movie again. But the resolution was changing.
The two SD DVDs were Star Wars III Revenge of the Sith and Brokeback Mountain (the DVD side of the HD DVD combo disc).