: When purchased legally, the game will automatically update to the latest version (including fixes beyond V1.05) through the game launcher.
If you obtained this from a piracy site, expect malware. The safest course is to download the official update from a legitimate store (Steam, Uplay/Ubisoft Connect) or a trusted scene release in standard archive format. Assassins Creed IV Black Flag Update V1 05-RELOADED.epub