I'm looking to update the nav disk on my 2004 ls. I see many of these disks for sale at version 6.1 or 7.1 but in viewing the disk I see an alpha numeric (ie: U21, 22, or 30, or W41) and I also noticed different versions (ie: 03.1, 03.2, 04.1,04.2 etc) are all these different V's,W's with numbers and versions 0_.1's or 0_.2's identifying specific vehicles? I've looked on ebay and sellers have charts that list my LS430on all of then (2004-2006 being gen 4) for both the U's, W's, 0_.1 & 0_.2!!
If it looks & sounds as I'm confused, I am. I don't want to buy something I can't return, that won't fit my cars application..
So I'm screaming "someone please help me understand. Thanks!! Bob (bob_cline@yahoo.com)