Please note that the update 3.1 is available for Gears of War 3 going to solve problems in the cycle of maps of "Fenix Rising" ( Academy, Slums, Escalation, Fortress, prison ) arose with the arrival of the last DLC and facilitates access to dedicated servers for those who had difficulty in reaching them. To download it you can just log on to Xbox Live with the Epic and the download will start automatically as a reminder that, as always, you'll have to wait for the restart of the dedicated server to ensure that the changes be made effective for all.