You can use your computer's internet connection to download updated map and voice guidance data with Map Loader. Map Loader is free, and you can download it from the Nokia website.
Map Loader:
Once you've downloaded your updates to Map Loader, you can transfer your new files straight to your device via Bluetooth or USB, or use a compatible memory card.
Note!
You must use the Maps application and browse maps at least once before using Map Loader.