You two would be wise to start a bit of reading
here.
If you are familiar with the core concepts of navcore, map, mapversion, meta, fastactivate, bootloader etc, you would be on your way to get yourself updated.
Ofcourse you can get info and help here but you might start with helping yourself.
But the short answer is: Download and install map of choice. Run FastActivate options 2 then 3, once completed disconnect and reboot it... Job done, happy driving!