I just bought an avic-f700bt for a guy never had a navi unit before. Well when i turn it on almost all the menu options are gray and wont let me in (bluetooth, adress for gps, dvd player wont play basically all i got that i can go into is fm,am,and some navi stuff. I need some help has anyone one tell me what is up cuz im lost. these kinda units are alot of money and i took a chance on a good deal that i've wanted for along time and might have been burned. thank u for any help