If that doesn’t work, your unlocker is too old. Look for a release titled —the scene groups updated them in late 2024.
If you are looking to unlock these expansions, here is a summary of what they offer based on player reviews: Let's Review - Assassin's Creed 4: Black Flag - Aveline DLC assassins creed iv black flag all dlc unlocker ps3 patched
To be clear:
Alternatively, Black Flag runs at 1080p/60fps on PS5 via backward compatibility, and the "Season Pass" goes on sale for $6 regularly. The PS3 version, while nostalgic, is the worst-performing version. If that doesn’t work, your unlocker is too old