Brandon, the latest is the V32 for the MKIV nav. Once loaded, it will read 4-1/00. Not sur what series the /02 is but it appears you could upgrade. V32 will also give you the 3D map display which updates the look of the map screen.

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2006 4.8iS Black/Black with custom Audison Voce/Image Dynamics sound
Production Date - 10/05