Run Setup.exe . Point the installer to your Assassin’s Creed IV Black Flag root directory (where AC4BFSP.exe is located). The patcher will verify file integrity before applying the delta updates.
A menu appeared. New Game . Continue .
You must have the base release installed (version 1.01 or 1.02). The V1.05 update is incremental; it does not work on the Skidrow or 3DM releases directly. Assassins Creed IV Black Flag Update V1 05-RELOADED