Problem: Tried to clone 2019 Mercedes Benz S450 FBS4 Bosch ecm MED17.7.3.1 with OBDSTAR DC706 on bench. Read and write eeprom/flash successfully, but the car does not start. Image attached: Solution: Need to update ECM software to V30.90 or later … Continue reading OBDSTAR DC706 Clone Benz FBS4 MED17.7.3.1 ECM