Question about Garmin Nuvi 255 GPS Receiver

2 Answers

It says . cant unlock maps.

Hi. when i turn on my garmin nuvi 255.it says, cant unlock maps. can you help please.

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2 Answers

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Hi,

Follow this below


Go to your account at garmin that you created to manage your maps.

Click myMaps

Click Manage Maps

You should see your unit and it’s unlock codes

Copy all the unlock codes for your device

Close your internet browser
Right click on your desktop

Click new, and then click a new Text Document

Click on the newly created Text Document icon from the desktop

Type your unlock codes into the document
Click File and Save as

Change the file name to gmapprom.unl (( double check this please ))

Change the “Save as type” to "All files"
Close the document

You should see the file gmapprom.unl on your desktop
Right click on the gmapprom.unl file and then click copy

Plug your Garmin device in and then click Computer/ My Computer
Click on the nüvi drive

Right click on the Garmin folder and click paste
Safely disconnect your Garmin device from the computer


Regards
Richard.

Posted on May 19, 2009

  • sbkh886
    sbkh886 May 07, 2012

    This worked awesome... Thank you so much, **** thing locked up its maps while I was driving..

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  • 1 Answer

My garmin nuvi says when turned on: no detailed maps found that support routing. the nuvi cannot be used without them.

Posted on Sep 18, 2009

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