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Mar 22, 2022, 8:12 pm192 pts
MacRumors
Following the release of iOS 15.4 on March 14, Apple has stopped signing iOS 15.4, the previously available version of iOS that came out in February. As iOS 15.3.1 is no longer being signed, it is not possible to downgrade to that version of iOS if you've updated to iOS 15.4. Apple routinely stops signing older…
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