Two weeks after the release of iOS 9.3 mobile operating system, Apple presented after the conference on March 21, the company has stopped signing the previous iOS version. This means that the operation downgrade to iOS 9.2.1 is now impossible.
Thus, if at the moment on your iOS-device firmware iOS 9.3 is installed, you can not go back to iOS 9.2.1. Otherwise, roll back to the last version of the system is over a mistake (in the absence of a specific device SHSH).
Since the release of iOS 9.3 users are faced with several bugs associated with the opening of links in any application, resulting in an automatic freeze Safari browser problems NightShift work mode and other minor bugs.
After 10 days of release, Apple has released an update iOS 9.3.1, which corrected some of the problems.
