There's no option, the CAN BUS lives in your factory amp so it must be installed for updates. Sucks but no way around it.
Bavsound / BimmerTech / anyone else you'd source an amp from does a BS crap job of explaining any of this. In fact they are all silent on the matter unless it has changed since I last looked. I went so far as to reach out to the founder of Bavsound to discuss the issue.
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2022 Macan S
2016 F31 328i xDrive Sport Wagon
2006 E46 330ci ZHP Convertible
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