In v1.09, the DLC content is already present in the game data. Access is granted via a tiny unlock key (often just 128kb) or by using "Force Enable DLC" patches in emulators like ShadPS4 .
: Updates to the Short Ritual Root Chalice allowed for faster matchmaking and better rewards in procedural dungeons. The Old Hunters DLC: Expanding the Nightmare bloodborne v109 dlc et mods cusa00900
The v1.09 patch is essentially the "complete" version of the game's data. Even if you haven't purchased the DLC separately, the v1.09 update includes all the DLC assets bloodborne v109 dlc et mods cusa00900