Then it won't work properly as the drive won't know its a nav map disc.

unzip the file (if it's been zipped up), run imgburn, and open the .iso, or .mds, or .bin with imgburn and then put a blank dvd in the drive and then write at a speed supported by the blank.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.