Apple has banned the “rollback” to iOS 9.1
Yesterday, Apple did what many feared — the company stopped signing all versions of iOS 9.0.2 for iPhone, iPad and iPod Touch. Thus, the company closed the only “window” that could help users roll out iOS iOS 9.1 or 9.2.
In particular, this limitation has affected those users who have installed on your gadget jailbreak and now I can’t accidentally take it and upgrade to 9.1. Utility for cracking this version of the mobile operating system from Apple is not yet available online.
Just a couple of days ago developers became available the first beta version of iOS 9.2, and it seems with this release is no longer signing 9.0.2. In the new OS Apple has focused on the correction of minor bugs and flaws — though CapsLock repaired only selectively.
By the way, many users have noted that on versions 9.0-9.0.2 old devices work much better than with the new updates iOS. So if you want to experiment, better to not even try.