Hi, How do I block (restrict) IOS firmware updates? I should like restrict the update from 8.4 to 9 due to our custom App fails with the last IOS firmware. Thanks

Hello, just updated some devices to iOS 9 (iPhone 4S and iPad Air). Besides that console is still reporting 8.4.1 i see no problems with upgrading Apple devices. Since Sophos doesn't mention iOS 9 at the moment, i'd like to know if someone encountered…