What one did you buy? Was it easy to fit? Considering fitting one to a f30What year M2?
You will have two options either fit an aftermarket MMI box which will have android auto built in. Done this on my E61 for CarPlay and it’s a great bit of kit.
Or replace the screen which has an MMI box fitted.
Unfortunately android auto was not introduced from factory until iDrive 7 which was never fitted to the M2.