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Garmin nuvi 750 GPS

Can't unlock maps on GPS, can't find the mapsource

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There is a serial number associated with your maps and your GPS unit. You will be able to get this serial number from Garmin when you register your software. Mapsource comes with the maps on the same disc. If it is not installed on your computer, it will automatically install.

Posted on Dec 13, 2008

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I downloaded maps to my nuvi and my computer. How do I open the maps on my computer?


Just download Garmin MapSource. With this you can also easily transfer your maps to any Garmin GPS device.

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There several reasons you may receive the message Can't Unlock Maps on your nuvi or zumo device.
  • Can you press OK and get to the Where To/View map screen?
  • Did you load maps to the unit using the MapSource or MapInstall program?
  • Did you load maps to an SD data card?

If one of the points above applies to you, please follow the steps below to clear the Can't Unlock Maps message:
  1. Remove SD card from unit, if applicable.
  2. Plug the unit into your computer with a compatible USB cable.
  3. Open MyComputer/Computer icon. (Mac users skip this step.)
  4. Right-Click on the Garmin drive and select Open. (Mac users can locate the Garmin drive mounted on the Desktop.)
  5. Open the Garmin folder.1
  6. Locate a file named gmapsupp.img
  7. Right-Click and delete file named gmapsupp.img
  8. Safely disconnect your unit from your computer to see if the Can't Unlock Maps message is gone.

1. Nuvi 1100/1200/1300/1400/1600/3700 and Zumo 665 users will open the Map folder instead.

*If the gmapsupp.img file does not appear in the Garmin folder, please create an unlock file for device.

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Garmin 750 cant unlock maps


Map unlock codes are specific to each unit. You will need to contact Garmin to obtain a code to unlock the maps.

Jul 10, 2009 | Garmin (010-00583-00) for nuvi 750/760/770

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I am still waiting for the promised free solution suggestions

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Here's a thought: instead of trying to install pirated maps which don't/won't work on your unit, how about actually buying the maps which are guaranteed to work. You will get a free copy of Mapsource on the disk with the maps of Europe.

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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.

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Carl


Unless you already made a backup copy, which you can restore back to the Garmin. The only solution is to buy a copy of Mapsource and register it with Garmin. Garmin will supply a unlock code based on the map registration number and the unit serial number.

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1 Answer

Mapsource update CD


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.

Good luck
Craig



www.gme.net.au/garmin/mapupdate/update2008.pdf

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Verify that you have the correct basemap for the country that you are in. There are two maps inside a new Garmin. The basemap which shows all the major highways and mapsource which shows all the street. If you don't have the correct basemap try changing 'Navigation' Advoidance to avoid highways and Toll Roads.

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