Get DayZ Commander, It updates the game for you and It's the only way I've managed to get 1.7.2.5 working while its still not full released. http://www.dayzcommander.com/ To update open DayZ Commander and select version at the top right, then you will see at the bottom of the list DayZ (not up to date) or something, Under there it should say update, click that and voila.