Apple has stopped signing iOS 11.3.1 which means that downgrading or restoring to that firmware version is no longer possible. A few days ago we reported to you that iOS 11.3.1 gained jailbreak support thanks to a new tfp0 exploit released by security researcher Ian Beer.
Most of Apple’s software updates fix bugs, improve security, and/or augment the user experience with new features. Preventing downgrades is just one method Apple imposes to move higher volumes of its user base to newer versions of iOS so that more folks take advantage of these enhancements.
Have you updated to iOS 11.3.1 or not?
