BMW is releasing an update to all BMWs that are equipped with BMW assist. It will effect all BMWs that have been produced from March 2010-December 2014.
This update will increase the security of the data that is transmitted from your car to BMW. This update will NOT require you to go to a BMW center to install this feature; it will be done automatically.
Also, you have the ability to update the software for your BMW assist manually. Watch the below video to see the exact steps involved: