Apple stops signing iOS 10.3.3 and iOS 11, making downgrades to pre-iOS 11 firmware impossible

Source: 9to5mac.com --- Wednesday, October 04, 2017
Apple, as it usually does following the release of new versions of iOS, has stopped signing iOS 10.3.3 and iOS 11. The company originally released iOS 11 last month and has since pushed two iterative bug fix updates to users. more… ...

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