If you are currently using this version, here are the most common technical details users look for:
Paste them into the main installation directory (usually in C:\Program Files (x86)\Ubisoft\Assassin's Creed Brotherhood ). Choose when prompted. assassin-s-creed-brotherhood-skidrow
Are really old Skidrow torrents still legit? : r/PiratedGames If you are currently using this version, here