Question about Garmin StreetPilot 2720 GPS Receiver

3 Answers

Uploaded Map Update 2008 City Navigator North American NT now maps locked

When I start unit up it says maps are locked and it no long displays detail maps.  If I search for an address it say no detail maps to display.  Spoke with basic Garmin Support two times and both said the problem was way over their heads.  They transferred me to PC support and the wait time was 30 minutes or more.  Ridiculous.  Can't sit on the phone that long.  Hopefully someone can help me here.  Also, I've entered all unlock codes and I went to and repeated to be sure they were current.  Did not help.

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Re: Uploaded Map Update 2008 City Navigator North...

I had the problem with a Garmin 2730 and what I did was hook up the usb to the unit, turn it on and when offered, selected the USB storage option. When the drive came on line called GARMIN, I went into the garmin folder, deleted gmapprom.img, deleted gmapsupp.img. I launched the mapsource DVD, highlighted all the USA maps including Canada and clicked on transfer to unit. When transfered, I went back into the GARMIN folder and renamed gmapsupp.img to gmapprom.img and no more locked codes. If you have the DVD that came with the unit, make sure a file called gmapprom.unl is there. It can be opened by NOTEPAD, and should have the unlocking code for the current DVD that you used to transfer the maps with.

Posted on Jul 25, 2008

Re: Uploaded Map Update 2008 City Navigator North...

You need an unlock code (25 Char Code) to unlock the map details...

Posted on Feb 21, 2008

Re: Uploaded Map Update 2008 City Navigator North...

I held on the phone with Garmin for about 2 hours, but they fixed my unit, PATIENCE!

Posted on Nov 16, 2007

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1 Answer

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You would need to have the City Navigator North American NT map installed on your gps or SD card....

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Seem to me it is still working with your map from the Carribean, this would have to be changed in the map area located on you nuvi, it will only give you one map of that country at a time.

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Create an account at myGarmin regsiter your unit ID number this will allow you to unlock the maps that you buy. You then have two options the first requires you to have an NT 2009 or 2008 map already installed.
nüMaps Lifetime™This will cost you £99.99 and is a on off payment Remember — this map update can only be used to update the preloaded maps that came installed on your Garmin GPS device. For example, a Garmin GPS device preloaded with North America maps only cannot be updated with a nüMaps Lifetime Europe Map Update, and vice versa. Check product compatibility. nüMaps Onetime™ This will cost you £79.99 and does not rely on having a map already installed.
The City Navigator® Europe NT comes on a DVD or you can download it.


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