these are the only 2 that i know an tried both where sat nav systems which only allow direct access to able switch mods on an off other mods can still be done via vcds
Enable Hidden menu in MMI 3G
[5F - Information Electr.]
[Adaptation - 10] -> Channel 6
change 0 to 1
To access the hidden menu, hold down car and setup together for 5 seconds
Use this hidden menu at your own risk.
Enable Hidden menu in MMI 2G
[07 - Control Head]
[Adaptation - 10] -> Channel 8 -> Change 0 to 1
To access the hidden menu, hold down car and setup together for 5 seconds
Use this hidden menu at your own risk. Caution: Keep away from the "Bootloader"