BMW (UK) don't want this available as a customer sale, but they are required by law to offer it for sale so they charge £200, its ridicules.

Just download a mode2/form1 OEM v32 and burn it your self.

As for the rebooting issue, which version of OS are you running.

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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.