I think it works because, i have used 1 dvd dl disc and instaled some sort of navi maps update witch is requiered if i use it in Denmark. I have burned it in to the disc, then i have set it into my headunit and pressed reset button, it have turned off and on, and installed that update without problems.So im not sure anymore is it a laser lens that gives me problems, or the cd's. Anyway if i put any kind of dvd or cd into my headunit i can hear that cd player spins the cd and writes reading format,but it doesnt show on the menu that S-CD or CD button have highlighted. I have 6 disc changer but