OBDSTAR G3 PSA SID803 ECU Read Write Guide

OBDSTAR X300 Classic G3 with ECU license read and write PSA Peugeot/Citroen Siemens Engine Control Unit ECU SID803 successfully with P004 adapter on bench mode. It’s commonly found in various Citroen, Fiat, and Peugeot vehicles, particularly the 2.0 HDI engine models, as well as some Ford Focus models.

Protocol: Continental/Simens/VDO SID 803 MPC555+AM29BL802CB+95320

Read ext eeprom (95320), int flash (MPC555), ext flash (AM29BL802CB).
Write ext eeprom, int flash and ext flash.
Supports checksum connection for int flash.

FYI: io-terminal also reads this ECU, but does not perform checksum correction.