What are you using? (PC, Android, original PSP, or PS Vita?) Which game region do you own? (US, Europe, or Japan?) Are you running into any specific error messages ?
Downloading DLC outside of the official PlayStation Store may require custom firmware (CFW) on your PSP. Please ensure you are abiding by local regulations. dissidia 012 duodecim final fantasy dlc pack download
The DLC (Downloadable Content) pack for Dissidia 012 Duodecim Final Fantasy is additional content that can be downloaded and installed to enhance the gaming experience. The DLC pack includes new characters, stages, and other exciting features that expand the game's universe. The pack is designed to provide players with new challenges, gameplay mechanics, and storylines, adding hours of new content to the game. What are you using