Thank you for everyone's posts about Z1 installation. Even as a newbee, I successfully installed an April 2006 Z1 and couldn't have done it without the expert guidance of everyone posting on this site. I was going to update the Gracenote CDDB using the current download on the Pioneer website [Version number: 07-01-0010, Date released: December, 2006], but was afraid it might have the same effect on the "light flashing" bypass that currently works like a charm. PaisanNYC says that the update actually removes all the motion locks, which seems contrary to what everyone says about other upgrade