Problem:
Mercedes Benz Sprinter 906
Delphi CRD 2.30 OM651 ECU.
Obd read with foxflash.
Stage 1 and DPF off.
Read ok, Obd write with foxflash no luck, the car won’t start anymore.
Solution:
CRD2 (DCM3.5) is a known problematic protocol for foxflash.
You need to use recovery function in kess2/kess3, not writing.
Recovery with old Kess by OBD and everything ok now.
The situation is saved by Kess clone which uploads via OBD without any problems.
FYI:
Some also managed to work CRD2.xx on table OBD mode,without bench box, external power supply 14v.
With this method they don’t have any problem with writing this ecu.