iOS 26.4 No Longer Signed by Apple, Blocking Downgrades From iOS 26.4.1

Apple contiguous stopped signing iOS 26.4, truthful iPhone users who person updated to iOS 26.4.1 are nary longer capable to downgrade to the earlier mentation of iOS. iOS 26.4.1 came retired a week ago.


When bundle is "signed," it means it tin walk the server-side verification cheque that Apple does erstwhile a idiosyncratic downloads a caller mentation of iOS connected an iPhone. An update that's not signed can't beryllium installed due to the fact that it won't walk the verification check.

Apple does not amusement users earlier versions of iOS aft an upgrade has been released, but erstwhile bundle is inactive signed, it is imaginable to downgrade with the macOS Finder app connected a Mac oregon the Apple Devices app connected a Windows PC.

Unsigning bundle prevents Apple customers from installing outdated, little unafraid versions of iOS, and Apple typically stops signing an update a week oregon truthful aft caller bundle comes out.

iOS 26.4.1 fixed iCloud syncing issues and Stolen Device Protection connected endeavor devices. While iOS 26.4.1 is the existent publically disposable mentation of iOS, Apple is besides beta investigating an iOS 26.5 update.
This article, "iOS 26.4 No Longer Signed by Apple, Blocking Downgrades From iOS 26.4.1" archetypal appeared connected MacRumors.com

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