Hello,
Im doing a engine swap on a car and need to delete VATs off this ecu. 12200411 DFNN.
I have it powered up on the bench following instructions found in one of the EFI support PDFs. It detects the ECU in the tune tool as LS1B. But when I click read I get error $0537 controller locked with custom key.

I have tried ticking the alternative keys and assume faulty lock checkboxes but still have the error.
Is there anyway to get past this error to delete the VATs?
Wrecker wont refund for ECU since they say it was working fine in the car it was pulled from and I cant get any further bits from that car since its already been crushed up.