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Reset button behind the Antenna, press this in for a few seconds.
Use the Web-updater at Garmin, to update it too,
Jack it to a PC and run the update,
If still playing up, Use the Firmware update at Garmin for it,
(( google Garmin 660 software updates ))
Should be good then
Eventually managed to speak to a man at Garmin who confirmed that it was not loading any European maps because it didn't have enough spare memory to load them all. He said that he would email me instructions for freeing up sufficient memory, the email never arrived but I decided to delet all the voice languages that were no use to me and all the other language 'help' files and tried again - it worked.
At no point did I get a 'insufficiant memory' warning, which would have been very helpful, nor is there any guidance for how much memory will be required when embarking on the update. Take note Garmin...
Try performing a reset of the unit. Hold down the bottom right of the touchscreen and turn the unit on. It will ask you whether you want to reset allk data. Choose yes and try again. This should solve your problem. Hope this helps.
It depends on how the files were corrupted. If the source of the corruption is not physical or magnetic damage to the memory chip where the software is stored, you should be able to reinstall the operating system software and the new maps right from your own PC.
First I would recommend going to the Nuvi 660 page in the Garmin website, look for the link to "downloads and updates", and download the most recent software update. The update is free.
Once you have done that, try reinstalling your maps. You can only load Garmin maps into your Nuvi.
If you are in the US and your memory storage is not damaged, I can update your GPS and install the map for you if you prefer.
My Garmin 660 after going thru the initial start up of "loading map" it will just SHUTDOWN. I have tried to clear the data in the diagnostic menu as recomendated by Garmin support to no avail. At the start, the trouble is it will just stay in the loading map stage. Then later it begin to shutdown.
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.