In December, Apple released two updates for its mobile operating system. The final version of iOS 12.1.1 became available on December 5 and iOS 12.1.2 was released in the night from 17 to 18 December. Starting today, users can no longer downgrade to iOS 12.1 – Apple stopped signing this firmware version.

In General, such a step is not unusual. Usually cupertinos stop signing older versions of iOS in about 2-3 weeks after the release of the new stable build. This time is enough to ensure that in case you encounter problems users can have the opportunity to abandon the failed update.

Such a mechanism allows Apple not only to contain the fragmentation of their platform, but also helps to maintain a high level of security, as the majority of mobile devices running recent versions of the operating system.

Recall that the last two iOS updates were more technical in nature. In iOS 12.1.1 Apple has activated the function of eSIM and presented the updated design of the interface, FaceTime, iOS 12.1.2 – fixed some bugs related to electronic “Simcoe”. But most importantly, the latest update should help Apple to avoid claims from Qualcomm.

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