I have been trolling this board for about a week as I got my AVIC-Z2 installed around then. I fell into a big bucket of $hit as I stumbled onto this thread and have been following it since page 1. I installed the ISO and it worked the first time, which was very easy. Just use Nero to burn the image. Oh, and for all that get errors during the upgrade, try lowering the burn speed of your CD burner! I then completed the 2 wired mod last night but it still threw the parking brake msg. So I tore it apart again today and notice that the "mute" wire was not pushed all the way up into the wiring harne