I’ve been having this issue that some of my playtesters’ devices are running older ios versions (e.g. iOS 5.1) and the game doesn’t run. My current version of the iOS is 6.1 and it works on 7.0 but not older. I’ve installed the iOS 5.1 simulator to test it on my machine and same thing. I need the 5.1 SDK. Where can I get that?