Guide to reset ECU on a Opel Cosra C by using FVDI commander for Opel/Vauxhall (which now update to second generation FVDI2).
Procedure:
Step 1: Read security code
Connect FVDI commander with vehicle
Open FVDI Opel software
Select Opel->Software version 5.8
Connecting to interface
select Special Function->Read security code
Select vehicle model: Corsa C and unit: Engine Z12XEP
Read security code success
Step 2: Reset ECU
Select Engine Control Module
FVDI Opel identify ecu information
Select Reset Engine and confirm
FVDI will require to enter 4-digit code to access
Enter security code read from step 1 and confirm
Security code reset.
Select Security Access->Identification
Then select Reset Engine and enter 4-digit code again
Close current interface.
Select Engine Control Module->Data Display
Reset Opel ECU by FVDI successfully.