I have just updated the mapsource to 2008. Everything downloaded successfully but my nuvi 660 now tells me it cannot unlock the maps. I entered the unlock code successfully but the unit just freezes on me.
What can I do
Hi check out this wed site, it will help. HT maps for the Nuvi are NOT for PC use. The map load onto the GPS as you install Mapsouce. Reinstall Mapsouce and take option 3 on the startup page of the program.
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you update the nuvi by plugging it into the computer and installing mapsource on your pc, then when you open mapsource on the pc with the device connected , if updates are available it will download and install them for you, please note you may have to pay for the updates
Most likely you had the 2007 or 2008 maps. Click on the wrench icon, then the maps symbol and then the word "info" or "about" and you should see the current map revision. If you updated it recently, it should now show 2009.
If the CD is from Garmin, it will already have Mapsource on it, and it will install when it is installing your maps onto PC. If you ever install any other maps, the CD will check to see if Mapsource is already installed and will skip this procedure.
Firs of all I hope you are using Garmin Map Updates for 2009, not 2008. It sounds like there is a connection issue. Make sure you can go into the drive on your computer and see the device as well as access files within it. If that is all fine: I have not seen a troubleshooting section yet unfortunately with Garmin for this map update (came out about 3 weeks ago) so i would try the ones for the older versions, should be the same.