Most users searching for this exact string are looking for a way to patch older pirated or "repacked" versions of the game. For example, popular repacks from sources like DODI Repack or FitGirl often list these specific CODEX updates in their version history to show they are "up to date" with the latest scene releases. Risks and Safety

While this specific update is a known historical release, downloading files with names like niohcompleteeditionupdatev12106codexrar from unverified third-party sites carries significant risks:

Concludes the story with the Summer Siege of Osaka and adds "The Abyss" endgame mode.

Applying a CODEX update to a version of the game from a different source (like a Steam retail copy) will likely break the game or cause it to fail to launch.