Apple stopped issuing digital certificates for iOS 8.1.1, said in his microblog hacker iH8Snow.Now iPhone and iPad users can install on their devices only iOS 8.1.2.
Release iOS 8.1.1 was held on November 18 - a month after the release of iOS 8.1. The update includes a number of improvements, including in the field of security systems. It fixes some bugs, improved stability and better performance for iPad 2 and iPhone 4s.
Usually Apple continues to sign the old firmware back in a few days, but in recent years the term has increased significantly. At this time the window was closed a month later - the company stopped signing iOS 8.1.1 on Thursday, December 18th.
Now Apple is not signing iOS 8.1.1 for any of the compatible devices. This means that users of iPhone, iPad and iPod touch can not be rolled back or upgrade from an earlier version to iOS 8.1.1. iH8Snow warned that after the transition to the new OS users will not be able to downgrade .
However, this time cease issuing certificates on iOS 8.1.1 does not bear serious trouble for users. For the new firmware iOS 8.1.2 is available an updated version of the exploit Taig , with which you can jailbreak and install store Cydia.
iOS 8.1.2 is currently the latest version of the OS. This is an interim update includes bug fixes and addresses an issue in which ringtones purchased from the iTunes Store can be removed from the device. iOS 8.1.2 is available for iPhone 6/6 Plus, iPhone 5 / 5s / 5c, iPhone 4s, iPad mini 1/2, iPad 2/3/4 / Air, as well as the player iPod touch 5G.