W204 Engine Misfire

Car keep misfiring, replace spark plug, ignition coil and fault remain.
therefore decided to repair ecu, finally found the culprit & have a happy customer.
Attached two copies of photo for your reference.


(CN)
马赛地发动机失火，更换了火花塞和点火线圈都没用，
最后更新引擎电脑问题解决。
附上两张电脑照片然大家看看电脑长什么样。