I have bought a car with a AVN 669 HD sistem in but it is all in Japenese.How do i change the sistem to Engelish?

SOURCE: avn 50d

call 310 327 2151..ask for support..they're going to ask you for the original purchaser's name..and maybe his or her mother's maiden name..after that the'll walk you thru setting up another security disc for the system..takes about 10 min...just did it yesterday...

SOURCE: avn 5500

I have had this unit for a long time. When I get the check disk, I take out the disk, and cool it off with the A/C air. I tend to get that notice when I haven't used the Nav in a while.