Changing BCM and New RDS Theftlock Radio

I'm thinking about upgrading the BCM on my 2000 Pontiac Montana from version 3 to version 4. It has a newer RDS Theftlock radio, which I just purchased on Ebay and paid the dealer big bucks to unlock.

My question is, will changing the BCM lock up my Radio?

Thanks,
Rod


EDIT:
Problem solved. Changing the BCM, did not lock my radio. Thanks to all those that helped.