Mass effect 2 cerberus pack for ps3

Bought me2 today dor the ps3. From what I am aware the cerberus pack has been made free to those who didnt receive it in their game . After going to the psn store the dlc says that it is "unavailable to download" . Any idea how to get a code if the store wont let me download one.

To clarify "not being able to download" means that the option to download it from the psn stite was grayed out.