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Idrive 7 audio systems (hu mgu) are they upgradeable?
Hello everyone and sorry if the topic I am about to take has already been treated. I'll be short: are you aware if the audio systems in the new idrive 7 systems (hu mgu) are upgradeable, especially the standard base system? If so, can you say in what way? I think that the topic is of interest to many and it would be very nice to develop a dedicated section, perhaps by the specialists who are certainly not lacking in this forum. Thank you all
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