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Originally Posted by cowboynj
The disc says 2001.1. I do not know what version of the nav. My vehicle is a 2001 4.4 that has the cheesy little nav screen. I have seen some of the posts with people trying to upgrade and it sounds too like too much trouble to me so I've touched nothing.
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Look in the top right-hand corner of the 'Set' or 'Settings' screen - report back on the numbers you see. This is your software version
Jochen