^ No idea. When I hook up my PS3 to my girlfriends father's TV. Which has the same issue, 480p and 1080i, it checks 720p automatically.
Just putting that out there, even for those who have 720p and want their games in 1080i/p instead of games loading to their 720p default resolution.
In in his case, I guess he could try checking only 1080i and see what happens.
iPhone = Great gaming device. Don't agree? Who cares, because you're wrong.
Currently playing:
Final Fantasy VI (iOS), Final Fantasy: Record Keeper (iOS) & Dragon Quest V (iOS)