If I remember correctly, you should see in the info of the Cock, a different log than what you get in the standard terms and conditions.
I knew that:
The opel (Astra, Corsa B, etc.) assemble ME 1.5.5.
The alfa/fiat/lancia assemble M 1.5.5.
Depends on the type of HW and SW of the ECU.
Some versions of HW and SW can't write them with the simple procedure to boot the external (without opening the ecu).