What changes
Unit 5F, object 0553 (phone): byte 0, bits 1–0 = 10 (two phones). Two phones connect to the MMI at the same time.
Details
The Support_second_phone item from the MIB3 firmware adaptation table, value “two” — bits 1–0 = 10. On some cars this value is already set at the factory — then the function shows that it is on. The MMI restarts after the write. Unit 5F on MQB Evo is SFD-protected — a token for unit 5F is required.