G'day branzman, welcome to Noeman. I moved your post here from another thread. You'll find V4.70 right above your post if you need it, and yes, it is the latest and Garmin sell a CF card with the fw update to V4.70 together with the NA map version 2013.10 originally issued about 2 years back and compiled with map data ~3 years old. All that for the measly sum of 95 bucks my friend, but you probably already know how well the Goldwing community has been 'serviced' [as in screwed] in recent years by Garmin and Honda in regard to the Navi units.
PS: Wisconsin rocks.
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