Do not attempt to go online with PSN using unreleased or unlicensed DLC PKGs. Sony’s DRM servers will flag mismatched licenses instantly, leading to a console ban. For local co-op or emulation, you are safe.
To get the DLC operational on a modded PS3 or an emulator like castlevania harmony of despair dlc pkg work
: Ensure your DLC region matches your game's GameID. For example, NPUB30505 is the North American (USA) version. If your DLC is for the European version (NPEB00563), it won't show up in your USA base game. 2. Installation on Modded PS3 (HEN/CFW) Do not attempt to go online with PSN