Need Help - Zenec E2014M

Hi guys,

sorry for this stupid question, but i havent found usefull information to understand how this iGo thinks work.
On my RNA Software is: Zenec Navigation Software 9.6.5.296260, dated on Apr 22 2013

I want to install new maps and maybe a newer Version of Navigation Software.

Is there any tutorial that explains what to do?

Thanks :)