How to Read/ Write Delphi ECU DCM3.5 (CRD2.2) by Boot Mode with CG FC200?

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A 2012 Jeep Compass 2.2 diesel ECU with DCM 3.5. Actually it’s from Mercedes company 2.2 diesel, similar with CRD2. It’s 136 horsepower. 
It cannot be read via OBD or bench methods, but it can be read and written using the CG FC200 in boot mode.



Connect FC200 to a PC and run software
Select Mercedes>> DELPHI CRD2.X MPC556X>> Boot



Check the wiring diagram
Open ECU shell, and then connect FC200 to ECU according to the wiring diagram



Held the brown cable to GPT-0 point in boot mode



Start to perform the related operation
Connect ECU successfully



Read and back up the original PFlash and ExtEEPROM in sequence





After that, load file to write only the difference between the original and what I modified
Write data successfully