opel astra j immobiliser problem

[ecusouthservice]

Hello, an opel astra 2013 petrol came to me , car does not start. detect anti theft system active and key not recognised.
customer told me that he had another bcm and try to program it to the car as the central locking on the old bcm was not working but car start.
while programming, the car is not starting with the new and old bcm as well now
i try to program key with xtool and fvdi buy same issue.

should i put a vrigin file on bcm and program keys?

please give suggestion
thanks in advance
car have a ac delco ecu e78

[Weasel3]

I think I read something about preparing old BCM, before swapping to the new one on these. At least with the original GM tool.
I guess it read out some info, and have it ready. So when you do the swap. It write some info to the new one.
To make fit and sync.
It is a procedure which needs to be done, to avoid problems when doing the swap.