Installing new map on Navigon 70/71 Premium Car

I have a Navigon 70/71 Premium Car with a 8GB SD-card. I'm using it in a VW UP

When starting up it shows:
BT: H14421-V30R0
BL: 1.58
OS: 2.15
Opengl: 375

Further information:
Program 120906-1136
Version 7.10.25 (build- 2481)
Navigon VW PID v1
Europa Versie Q2 2011

I would like to install a new Europe map:Q4/2016 Fresh Maps MN7&MN8

I don't have any experience on updating.
What are you recommanding me to do so or is it very complicated?