My upgraded E90 ECM is saying hardware needs to be unlocked

[Gravelinet]

I ordered an upgraded E90/E93 non global B ECM from hptuners to go with my whipple supercharger, after installing the computer said it needed to be unlocked and would not let me continue further then that? How do I get it unlocked?this is for a 2019 gmc Sierra 5.3 Any help is much appreciated Thankyou in advance

[edcmat-l1]

You won't get any help in the lounge section. Try posting in the GEN5 section.