This disc it not normally available to the UK public mate, the UK dealers do not have this in their parts catalouge and is available to dealers only (It should be used in cars with nav when in for servicing, but never is).

UK dealers are pretty usless where the OEM nav is concerned.

Part number : 01590141891
Pic



This is to update the OS on nav computers not the maps, your dealer is a moron.

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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.