When did you buy your MH? Check maps installed. 2015 Q3 is the latest. They give you 30 days from first activation. Check in Naviextras in upper left corner for you device details. If within 30 days, you should be able to just update for FREE.
If over 30 days, they honored mine within 30 days of my purchase. I clicked on Support and Customer care and scrolled thru to send a question. Asked how can I get my FREE map update as the end user when the MH Nav radio was activated prior to my purchase? They came back a few days later requesting proof of purchase. Must be done within 30 days of your purchase for them to honor it.
I sent that in and a few days later received a reply stating I had 7 days to install it. The authorization was already to go and I only had to insert the SDmirco card. Original 3 GB card was to small and I used an 8 GB I had.
2004 Winnebago Minnie 22e(went to a nice family Oct 3, 2015)
2016 Forester 2701DS (Aug 31, 2015)
2015 Camping 3 trips 6 nights
2016 Camping 9 trips 28 nights