Join Date Sep 2007 Location Wilmington, NC Posts 14,013 Re: Nav updata issues need some help or advice! hmm... not sure if i can help what you would need is a 2005 or 2006 disc that is known to be good and working the best way to get a hold of one might be used car lots ... check around for one that has a 2005 or 2006 with nav and then go down there and ask nicely to try their disc in your car tha