Yes, the password will be used to unpack (unrar).
First download all parts to same folder.
Double click with the right button of the mouse in one of they and the "unpacker (winzip, WinRAR,...)" will ask you a password to can unpack.
So, you have the map. Unlock with gimgunlock, drag the map into the icon to unlock.
Copy it in your nuvi's \Garmin directory
or new devices in .System hidden directory.
In 3xxx and 2xxx you can put it also in sd/Map folder with anyname.img; the last option is the recommended.
Hope been helpful, best regards.
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