To resolve firmware update errors and problems, reverting to a previous stable iOS version is a common solution. However, new versions of iOS software often cause unpleasant experiences to device performance and functionality. iOS users will not be able to restore to unsigned firmware using iTunes.ĭue to security concerns, Apple will periodically unsign iOS version and encourages users to use the new features offered by new iOS version updates. An unsigned IPSW means Apple has stopped supporting the iOS version. IPSW is the file extension of Apple’s iPhone mobile operating system. Method 3: The Easiest and Fastest Way on iOS Downgrade Method 2: Restore Unsigned IPSW via FutureRestore Method 1: Restore Unsigned IPSW with SHSH2 Blobs Part 2: Is It Possible to Install Unsigned IPSW? But what if Apple has stopped signing the version you intend to downgrade to? How to restore and install unsigned IPSW of that version? This guide will give you all the answers! One way to solve the problem associated with iOS update is to move back to a known stable version, in other words, downgrade iOS version. However, every iOS update comes with its downsides and often bring some problems like iPhone battery draining fast, iPhone keeps freezing, iPhone charging problem, etc. This means that sooner or later, your current iOS version will no longer be supported and you may have to upgrade your iPhone to a new firmware version. The much-anticipated Apple iOS 17 has been unveiled! As Apple releases new iOS versions, it will also stop signing some older iOS versions.
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