I have used My Navnet in a while, and now I'm baffled at how to get there. Maybe it has been changed? When I bought my MFD12 and radar, I registered them and subsequently remember using something called My Navnet to download software updates and additional charts. Now I've been all over the FurunoUsa.com and the support tabs and can't find the charts. I did find the software update directions, but not the software itself. I tried going through the product registration screen, had to recreate my login info which seems to have disappeared, but still nothing like what I remember. It has been about a year, so my memory on how I got there is foggy.