Dear Mr.Varit,
As I told you before, the ECU's software is customized by the factory to the specified engine.
Because your testing truck use the ECU box for 52236460, it can work normally. But you took out your ECU and changed to our ECU for 52543066,our ECU can't work normal on that truck. When the factory tested our ECU on their system, our ECU can work normally. After compared your video and pictures, the factory made sure that you don't use our ECU on the truck with the engine 52543066. The factory knew their products well than others.
The sticker "Type PCH:MM022010A", are pasted for FAW company's whole truck. That's easy for FAW company to assembly their truck. If you buy a single ECU, the factory only ask you to supply the engine nameplate. If you don't beleave my explain, you can buy ECU directly from the FAW company to compare the ECU on your truck.
Best regards,
Martin