I updated my XF 2013 sat nav, I asked my local dealer to check what version I have. I purchased a new USB stick with the maps on. They send you the USB and then send you a pass code. You load the USB in the centre console USB socket, switch on and follow the instructions. I actually went for a 3 hour drive while it updated the maps.
If this is of any interest to you, I will find the link and post it.
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