i installed the duo2 SE modchip the other day. It appears to be working correctly except for the fact that it will not play dvd-r backups. It is reading cdr backups, original dvd movies, original ps2 dvd games, dvd-r movies. I burned the .ISO using recordnow max using a verbatim dvd-r at 1x. I also tried adjusting the laser a bit. Please let me know what else i should try as i am stumped.