Problem installing 2015.20 to PC !!!

 

I do not know if this has been covered before but here is my way of fixing a problem installing the map to the PC.

After downloading 2015.20 and it installing fine to the GPS but not to the PC, I tried 3 times with GE to install to the PC. Each and everytime I got an error that it did not install sucessfully.

In Mapsource the 2015.20 did not show up. I found the installation files on the hard drive in C:\ProgramData\Garmin\Core Update Service\Map-NA-2015.20\IMG\CityNavigatorNorthAmericaNT.2015.20Update.msi

I right clicked on the .msi file, selected "Install" and the map got installed on my PC. But it was LOCKED.

What to do?

Could not find the unlock code, the gmappom.unl in the GPS did not contain the corect one.

So using MapSource I was successful by the following routine.

Plugged the GPS into the PC. Opened MapSource and in "Utilities" selected "Manage Map Products" then chose "Unlock Regions". 2015.20 was not shown but a lot of strange files did. So I clicked on the first "Map product not installed" file. Now 3 boxes to the right became active. I selected "Import" and now I was able to do a search. I found my 3790 and in the dropdown box selected "Unlock Code Files (*.gma)" then in the GPS selectd the file "gmapprom.gma"

Bingo, now my 2015.20 is now unlocked in MapSource.

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Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.

Was GPS connected?

When you first tried to use Garmin Express to install the map to the PC, was the GPS connected to the PC? It is the proof that you deserve a map download.

dobs108 smile

Yes

dobs108 wrote:

When you first tried to use Garmin Express to install the map to the PC, was the GPS connected to the PC? It is the proof that you deserve a map download.dobs108 smile

See above:
After downloading 2015.20 and it installing fine to the GPS but not to the PC, I tried 3 times with GE to install to the PC. Each and everytime I got an error that it did not install sucessfully.
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GE would not let you download or install anything without the GPS connected at any time.

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Nuvi 350 long gone, Nuvi 855LMT, Nuvi 2797LMT, DriveSmart 50 LMT-HD, 3790LMT now my daughters. Using Windows 10. DashCam A108C with GPS.