Yes, people have updated NAVI maps before at places like the Dragon for free. Its easy to do as I have helped a few people remove panels to get to the plug in the past. Keep searching here on M/A or the NAMless site and someone will be able to help you out.
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Dave.0 Helix & RMW PoweredLifetime Supporter
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Rockridge Member
It turns out like I thought.
The USB stick "should" have had the move 2016-2 map on it, but appears to have been overwritten with a soft copy of the license code. Bedford Mini figured out what they had done, and completed the install for me, verified the map, and then refunded me the cost of materials. Kudos to them.