Need to update maps of Navigon VM1310 How to?

Hi i need to update maps of this gps, its possible? Thanks

In product information it says Navigon VM1310

Version: 7.4.1 (Build 793)

Program: 090420-1839

Navigatio AG Hamburg 8G92 (12XX) | (2XXXX)

On Navigon page it says that the q4/2014 maps its compatible with my gps. Anyone know how to install the new maps? Thanks

http://www.navigon.com/portal/int/karten_services/karten/map_of_europe.html