Just a warning for those that have this unit in their motor home. DO NOT upgrade the software from
Jensen : Mobile Multimedia : VX7020
This not the maker of the unit is ASA electronics. Result the navigation software will not work.
The background wanted to replace the 4 gig card with an 8 gig card (not enough space to update maps). I was told that is not a problem just use Naviextras to backup and restore. Silly me also upgraded to the latest version of software for the deck as from above site.
Now waiting to see how to correct the upgrade.
Ps still thing 4 to 8 gig change will work