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Garmin nuvi 750

I can't unlock maps on my gps, what do i do?

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  • Master
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HI
Connect your GPS device to your computer's USB port and click the 'Find Devices' button below. When your device is detected, enter the serial number found on your GPS device and the 8-digit product key found on the back of the disc's case. Then click the 'Unlock Map' button below.

Posted on Dec 03, 2008

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  • Master
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Sir/madam,

Some of the mapsets require unlock codes that only work with 1 device. click this link. You need to have an unlock code from Garmin for your GPS to use the other maps on it. You'll need to contact Garmin to get an unlock code.

The mapset file that is created on the SD card from Mapsource is coded specifically to only work on the serial number of the device it was unlocked for.

contact manufacturer.

thanks
good luck

Posted on Dec 03, 2008

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  • Master
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Hi,
If your Nüvi or StreetPilot C5xx series keep displaying the maps are locked, you will need to erase a file from the units memory. Connect your GPS system to your computer; go to start then ‘My Computer’, and double click on your device file (mass storage system), there you will see a folder named ‘Garmin’.
In this folder are several different files, look for file named gmapsupp.img. Right hand click on this file and delete as this file is causing the maps to lock.


Thanks
proton

Posted on Dec 03, 2008

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  • Master
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Did you select map areas in Map source and load them through the program?

Posted on Dec 03, 2008

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  • Master
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Hi,

All GPS that supports NT maps, do also work with non-NT. Not the other way around.

To see that it works you can activate both GPS and Mapsouce in demo modes.
Go in to MapSource and select:
Utileties -> Unlock Maps -> Next -> Yes I have 25-carachter key -> Next -> Next ->
In the field "Enter 25-character code" type inn "DEMO" -> Next -> Close.

This sets MapSource in Demo and unlocks all maps you have installed.
Then send the map to the GPS that you like to look at.

This will set the GPS into Demo modus. (Works only in emulated nodus)

To get out of demo modus, remove the "DEMO" key from Unlock wizard and
transfere any map you like to the GPS, or deltete the \garmin\gmapsupp.img file.

Posted on Dec 03, 2008

5 Suggested Answers

tech curly
  • 298 Answers

SOURCE: Garmin Nuvi 750 GPS

Have you tried this?

You can try this step that I found. If you tried loading other mapas try this.

You will need to erase a file from the units memory. Connect your GPS system to your computer; go to start then ‘My Computer’, and double click on your device file (mass storage system), there you will see a folder named ‘Garmin’.
In this folder are several different files, look for file named gmapsupp.img. Right hand click on this file and delete as this file is causing the maps to lock.

Posted on Aug 03, 2008

mastersaintx
  • 928 Answers

SOURCE: Map was deleted by mistake from nuvi 200W garmin GPS

Connect your Garmin to the computer. Go to http://www8.garmin.com/support/download.jsp then click on mapping updates

Posted on Aug 31, 2008

RPFinney
  • 385 Answers

SOURCE: "Cannot unlock maps" when GPS is disconnected.

Hi,

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


All the best
Regards
Richard.

Posted on Apr 26, 2009

  • 4090 Answers

SOURCE: Is there any free map updates for the garmin nuvi?

Asmany as there are FREE dinners Updates are not free, unless you paid full price for it when you bought it. Free upgrades are a deceptive myth. If you get a free uograde its usually minor and was included in the price of the pack.

Posted on Sep 20, 2009

radar001
  • 1051 Answers

SOURCE: looking for Map upgrades for Garmin Nuvi GPS

I've looked for free map upgrades for my Garmin and could not find anything. I did find a lifetime map upgrade deal for around $75. It allows you unlimited upgrades for as long as you own the GPS. Go to the garmin site and search NUMaps.

Posted on Jan 18, 2010

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