Xhorse Multi Prog read and write GM Bosch EDC16C9 ECU on bench successfully.
It is a Opel/Vauxhall Vectra. Read ext eeprom, ext flash and int flash all fine. Write ok as well.
Got no issues with EDC16C9. Just tried one. Check wiring, power supply etc. See if diagnostic can talk to ECU on the bench. Might need a pull-up on K-Line, some ECU’s do.
