Could be a similar issue but I didnt have that error message. My "issue" was that the phone connected to the car via bluetooth would disconnect once an active sim was inserted in the dash slot next to the SD card slots. The MMI update enabled both the data sim in the dash slot and a phone via bluetooth to be active at the same time. You then can choose in the menu which sim/phone is to be used as the car phone/handsfree.
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