Norway trip navigator v maps

[RJM123]

Hi All, how do I go about updating the maps on my navigator v? I am in norway right now and some roads don't exist following major new roads being completed on south coast. I am sure there are lots of threads about this but I can't find them, if someone could stear me to the correct? Ta

 

[Deleted account 260111001]

I used to do mine with garmin express https://support.garmin.com/en-GB/?productID=553253&faq=GWyUk6GY7s6okEzL4d1Gs7&tab=topics