Even on WiFi no update has come in since early march. I know the maps are outdated because the regular TomTom Go Mobile app has had his updated and in my area there has been some road changes, that are correctly displayed in the regular TomTom app, but not in the NDS app.
By the way it is not impatience, I'm still wondering how serieus TomTom is with this new NDS-app and if it is willing to maintain and update it. Since it is aimed at South America, updates for European maps might be less urgent for TomTom
Bookmarks