Here is an update page on GitHub devoted to updating Chinese android head units. https://github.com/chinesebmwheadunits
I haven't had a chance to muck around in there and the files for the MCU updates for the BMW iDrive are 3 years old but worth a look.
I haven't had a chance to muck around in there and the files for the MCU updates for the BMW iDrive are 3 years old but worth a look.