- Connect your device to a computer with a compatible USB data cable or Bluetooth connection. If you use a data cable, select PC Suite as the USB connection method for PCs, and Nokia mode for Macs.
- Start Nokia Map Loader on the computer.
- Select a continent and a country. Small countries may be chosen in their entirety; others have several sub-maps from which to choose.
Run Nokia Maps on your phone once before you add any maps or voices. This will create the required folder structure on your memory card.
Unzip the downloaded map files and drop them into the appropriate folders on your memory card.
On my Nokia the folder structure is cities with a subfolder called diskcache, filled with 16 subfolders called0 to 9 and a to f, and each of these folders have another 16 subfolders 0 to 9 and a to f.
Map files have the extension .cdt. Example:
[memory card]\cities\diskcache\[0-9, a-f]\[0-9, a-f]\filename.cdt
On some Nokia phones (like the N95) maps are stored in:
\Private\20001f63\diskcache\[0-9, a-f]\[0-9, a-f]\filename.cdt
To install, just drop the 16 folders called 0-9 and a-f into the diskcache folder.
If your phone has both folders, get a small map (for a single country) and try both folders to see which one works. Even Nokia's own map loader doesn't always get it right. Details on the Nokia discussion board.