Not sure about the MK3, but I would assume it's the same as the MK4, anyway, the languages on the MK4 stay as you have set them, I have UK (F) US (F) and GER (F), and they have been like that since v28.

HTH

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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.