One of member from my350z told me to reboot my D1 because it's got an error message. I just want to know how to reboot this d1. I bought a cd from ebay and this thing ruined my d1. here is what he told me to do

 

 

I dont remember exactly, but from avic411.com there is a procedure that you follow to enter the service menu. There are some commands to follow to reboot the software in from the nave disc. I had the same issue as you did when I bought an updated map disc from ebay. I fixed mine useing that info. My D1 is as good as new now.