This update is for all Arma 2: Operation Arrowhead versions except STEAM. For STEAM version use STEAM update.
This is the official update for Arma 2: Operation Arrowhead from 1.50-1.55 version to 1.56.
This free update is sponsored by Sprocket, the online store where you can buy all Arma 2 series titles and other games directly from the developers.
This Arma 2:OA 1.56 update includes the 1.02 BAF update.