Unlocking Harmon Kardon 810na

ardeegps

has anybody any info on unlocking the above gps so I can update the maps from 2008
Please keep in mind I know nothing about this but willing to learn.

t923347

According to this site there has been no software or map updates since an announcement made January 2010:

http://www.fixya.com/support/t1422306-update_harman_kardon_gps_810eu_maps

You may well have the most up to date maps available.