RayC

Thanks for all the info. I guess the version number (in my case, 02.1) corresponds with the model year build date. So, I guess I can use the version 5 DVD for an update. First, I'll check to find out when the '06 discs will be out. I've seen the DVD's on eBay, and might opt for one of the older ones, since mine is an '02 vintage.

Thanks for the link to the site. It lists both Gen 2 and Gen 3 as applicable to the 2003 LS 430. I did locate the DVD player in the trunk. Since the screen shows version 02.1, do I assume that's Generation 2? I assume the "generation" designation refers to hardware/firmware configuration. Is that true?

I recently purchased my first Lexus - a 2003 LS 430. I don't know when the nav system was last updated - the screen shows version 02.1. I note that update DVD's are available, but I'm not sure which ones will work. Also, if the update is on DVD, can I assume the CD player will do double duty?