Are the preinstalled maps that come with the Garmin 945 updated via WIFI/Bluetooth together with a firmware update or is it mandatory to connect the watch to a computer and use Garmin Express? I am talking about the preinstalled maps that come by default (Wordwide DEM, TopoActive Europe 2018.20 North East and TopoActive Europe 2018.20 South West), because I've never used Garmin Express and I don't know if I have the latest version.