QUOTE (dcfish @ May 23 2009, 11:52 AM)

QUOTE (geng @ May 23 2009, 02:22 AM)

I have an 06' GS430 with navigation with the old style interface but I want to upgrade my navi to the 07' or 08' system version. Is that possible?
Do you want a new 09 nav or just the new map ?
I have a 2008 GS with original nav. I borrowed and copied to my computer hard drive a copied updated DVD Gen 5 V.8.1. disc. It was on a DVD +R DL disk and woked on my friends Lexus which is older than mine. I then burned a DVD +R DL disk but the car won't read it. Have I done something wrong? Do I need to do something to the nav unit when inserting an updated disc. It says that it can't read the new disc. Is an updated disc available?