Quote Originally Posted by sfw1960 View Post
Agreed.
You should always save a copy and keep a spare on at least one computer or SD Card.

You can export all your NAV data to the same SD Card, it will go in a "Matrix" folder and the update is a ".BIN" file that you just copy to the card, no folder.

Thant can be removed after the update completes - SD Cards are cheap too.
Thanks guys y'all are great!! I will try all this tommorrow.