By today, Apple has ceased signing iOS 9.2.1 for suitable iPhone, iPad, and iPod touch versions, meaning customers CAn’t update or downgrade to that particular edition of iOS using iTunes. Apple has become signing iOS 9.3 and iOS 9.3.1 only.
iOS 9.3 was launched towards the community on March 21, and iOS 9.3.1 was launched 10 nights later on March 31.
iOS 9.3 has experienced many insects because it was launched, which might have motivated some customers to downgrade towards the more steady iOS 9.2.1 release. An Service Lock problem on some older devices triggered Apple to briefly draw the iOS 9.3 update for many customers soon after iOS 9.3 released, and the iOS 9.3.1 update premiered to repair another main insect that triggered apps to accident or freeze after going or long pushing on the website link. Both problems have been resolved.
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