A new title update has been released for Bloodborne that fixes an issue preventing some users from acquiring the Lunarium Key; a key item required to progress through the game.
The key had previously become unobtainable once the player had joined an online multiplayer game in the Forbidden Woods area around halfway way through the game. But according to the game's patch notes, title update 1.02 resolves the issue along with other smaller bug fixes.
The update does not improve the game's performance, with a patch intended to improve Bloodborne's load times currently being investigated by From Software.