Thread: Map installation on Garmin GPSMAP 276c

Hey,

I´ve got a little problem with my Garmin 276c...

After downloading this map:

[Only registered and activated users can see links. ]

I want to load it on my Data Card that is installed with this Map:

[Only registered and activated users can see links. ]

after connecting it to PC with the usb Port on the GPS, Mapsource is saying that this is not a valid chart and cannot load this...
So my question is if I can transfer this chart to my existing Data Card by using any other software? It doesn't matter if all preinstalled things on the Data Card get lost.

Thanks

Nick B.