Question about Garmin eTrex Vista C (010-0368-00) GPS Receiver

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WHEN i START UP MY GPS IT SAYS 'Can't Unlock Maps' please help!

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Posted on Jan 02, 2017

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SOURCE: my GPS keeps saying cant unlock maps after i

The Garmin Maps require a map unlock code in order for the GPS to be able to open/access it. Since the maps are copyright protected by Garmin you should of recieved the unlock code from Garmin when you purchased the new map update.

Posted on Mar 09, 2010

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SOURCE: Hi, I am from Argentina, last

Here is a link, they have a lot of good maps.


Posted on Jun 01, 2011

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SOURCE: i have a garmin GPSmap

Welcome to FixYa!

If you are getting the message "Can't Unlock Maps, there may be an issue with the unlock file on your device.

Please follow the steps below to restore the mapping unlock file:

  • Log into your myGarmin account
  • Select myMaps
  • Below the appropriate device, select the "Details" link
  • Look for the Unlock Code listed on this page
  • Copy all the unlock codes for your device
  • Close your internet browser
  • Right-Click on your Desktop
  • Click New and then click Text Document
  • Double-Click on the newly created Text Document icon from the desktop
  • Paste or type your unlock codes into the document
  • Click File and then click Save As
  • Change the file name to: gmapprom.unl
  • Change the "Save as type" to "All Files"
  • Click Save
  • Close the document (You should see the file gmapprom.unl on your Desktop)
  • Right-Click on the gmapprom.unl file and then click Copy
  • Connect your Garmin device to your computer and open Computer/My Computer
  • Right-Click on your device (the drive letter that corresponds to your device/GPS)
  • Click Open
  • Right-Click on the Garmin folder and click Paste
  • Right-Click on your device (the drive letter that corresponds to your device/GPS)
  • Eject/Remove
  • Disconnect your device/GPS

Thank you for using FixYa.
Have a great day.

Posted on Jul 31, 2011

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Question: What should I do if my Garmin nuvi or zumo displays the message "No Detailed Maps Found That Support Routing" or "No Map Data Available?"
--> Answer: The "No Detailed Maps Found That Support Routing" or "No Map Data Available" message may appear on your device for the following reasons:
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To determine the cause of the message, touch the screen until the message "No Detailed Maps Found That Support Routing" disappears.
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