2015 M4 F83 Bluetooth (phone works but no audio)

[Brentgaz]

First timer here, so may be posting this incorrectly (apologies).

Was on a road trip recently and mid trip the Bluetooth audio functionality of the system just dropped. Phone worked OK, but zilch on the audio.

iPhone was totally up to date, and everything else seems to be good.

I tried re-booting the iDrive by watching a couple YouTube vids, but the buttons pressed didn't seem to result in a reset.

Has anyone successfully rebooted an iDrive system off a 2015 M4 Cab?

I am using an aux cable at the moment, but it sucks compared....

Thanks for your time!
BG