Might look like a noob question, but my father uses a Navon A500 + iGO Truck Primo NextGen purchased in 2021 and used for trucking, the map is outdated now.
I've found Naviextras Toolbox, in theory the official app for updating the maps. He only need Hungary, so we bought it from the site. There was no specification it was for heavy vehicles or only for cars, however there was a part which said trucking ...