On another thread, "Sellador" posted about some Garmin Compatible open source maps available of NZ at http://gwprojects.orcon.net.nz/gps/
He posted "There's some question about them working with the Nuvi line, but it's mostly that no one there has tried, and it's worth a look before spending so much on the commercial ones."
I am kind of a cautious person and am looking for some more input from those far more experienced with GPSr than I am, before I risk making my brand new $500 Nuvi inoperable. Any advice would be appreciated.
Edit: I have just spent a few minutes on the sites forums and it seems that the maps have been loaded on Nuvi 660 but that you cannot do address searches and you need a POI file just to find streets
... before I risk making my brand new $500 Nuvi inoperable.
Use an SD card to test your new map; that way you can always just remove the card, if you get into difficulties.
If I understand it correctly, the 3rd party map creation programs are not able to generate the index structures needed for the street searches on the Nüvi. It's quite possible that I don't understand it correctly though
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