Upgrade 2015 NBT to NBT EVO (ID6)
originally I though £2k, bugger that for a joke... But info on bummer-tech suggests I don't have to update my display or iDrive controller and it might be possible to just replace the HU.
Has anyone else done that? Because I seem to be able to get an ID6 HU for around £500-£600 on fleabay...
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