This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

“cannot unlock maps”

Former Member
Former Member
Hi I have a Garmin nuvi 2310, i have updated my software using Garmin Express. But now my satnav says “cannot unlock maps” when it starts up. I have logged into my Garmin and it says I have MPC Map and City Navigator Europe NTU 2013.10, UK & Ireland – Map only, Apr 12. But when I go to my maps on the device the screen is empty. I have tried all the suggestions on Garmins page (Cant unlock maps) but still struggling? I have also seen other forum advice but nothings getting rid of it.



Please someone help me?
  • Have you tried reinstalling the map using Express?

    Did you backup your device at any time? If so have you tried copying the map files back?
  • Former Member
    0 Former Member over 8 years ago
    Thanks for your reply yes gave tried reinstalling maps with express. Also have ensured that I have ejected device before disconnecting. I'm afraid naively I didn't back up.
  • adii8888

    I am sorry that you are having trouble with your Garmin device. If the maps are still locked after reinstalling them with Express, I would recommend trying a master reset on the device. If this does not solve the problem, it would be best to contact Product Support by phone.

    Jason
  • Former Member
    0 Former Member over 8 years ago
    Thanks for the reply as my device is a nuvi2310 im guessing that the reset instructions I should follow are for the series 2300, but im not getting a diagnostics page.

    Somethings gone badly wrong think its time to get a new sat nav. Wish i hadnt tried to update the maps as worked great before.
  • Correct. Note there are two methods for master resetting that device, so try the alternative.
  • Former Member
    0 Former Member over 8 years ago
    Thanks managed to do the factory reset now but when I restart im still getting the same message.
  • If you've tried reinstalling the maps after the master reset (?) then contact Product Support for detailed help.

    You could also try installing the unlock code manually:

    The unlock code for the mapping on your GPS can be found in your myGarmin registration account under myMaps, then clicking on the Details button under "Maps associated with this device"....

    To install this do the following:

    1) Right click your mouse on the desktop of your computer, then select "New", then select "Text Document". This will place a new text document icon on your desktop
    2) Double click on the newly created Text Document icon on the desktop to open the text document window
    3) Copy the unlock code into the document.
    4) Click “File”, then "Save as"
    5) In the "Save as" dialogue box, change the file name to gmapprom.unl
    6) Change the “Save as type” to "All files", then save the document and close it
    7) You should see the file "gmapprom.unl" on your desktop as an icon
    8) Right click on the gmapprom.unl file on the desktop and then select “copy”
    9) Plug your Garmin device into your computer and then open “My Computer” or “Computer” This will show the devices attached to the computer
    10) Double click on the Garmin or Nuvi drive to access the files on the card.
    11) Right click on the folder containing the maps and paste the gmapprom.unl file into the Garmin file folder.
    12) Safely disconnect your Garmin device from the computer electronically before disconnecting the cable.
    13) Disconnect the USB cable, then power the GPS on…..
  • Former Member
    0 Former Member over 8 years ago
    Having spoken to support it seems that my maps are out of date and this is the reason why updating my software which i thought was a good thing has in fact rendered my device useless. Im quite annoyed about this as if I had known this i wouldn't have bothered updating what was a perfectly working device in the first place. Garmin should have warnings to people with older devices NOT to update their software. My option now is to buy a new sat nav!

    I have been told that as a gesture of goodwill i would be given an up to date map on my account. But this hasnt happened.
  • adii8888

    I checked your account and there is a Onetime City Navigator Europe NTU map update available.

    Lisa
  • Former Member
    0 Former Member over 8 years ago
    Thats what I was told lisa but when I log into my garmin that update is $89 to be honest I may as well buy a new device?