Apple today stopped signing iOS 26.4, so iPhone users who have updated to iOS 26.4.1 are no longer able to downgrade to the earlier version of iOS. iOS 26.4.1 came out a week ago.


When software is "signed," it means it can pass the server-side verification check that Apple does when a user downloads a new version of iOS on an iPhone. An update that's not signed can't be installed because it won't pass the verification check.

Apple does not show users earlier versions of iOS after an upgrade has been released, but when software is still signed, it is possible to downgrade with the macOS Finder app on a Mac or the Apple Devices app on a Windows PC.

Unsigning software prevents Apple customers from installing outdated, less secure versions of iOS, and Apple typically stops signing an update a week or so after new software comes out.

iOS 26.4.1 fixed iCloud syncing issues and Stolen Device Protection on enterprise devices. While iOS 26.4.1 is the current publicly available version of iOS, Apple is also beta testing an iOS 26.5 update.
This article, "iOS 26.4 No Longer Signed by Apple, Blocking Downgrades From iOS 26.4.1" first appeared on MacRumors.com

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Apple today provided public beta testers with the second releases of upcoming iOS 26.5, iPadOS 26.5, watchOS 26.5, and tvOS 26.5 updates for testing purposes. The public betas come a day after Apple provided the betas to developers.


After signing up for beta testing on Apple's beta site, public beta testers can download the updates using the Software Update section of the Settings app on each device.

iOS 26.5 and iPadOS 26.5 include a new Suggested Places feature for recommending nearby locations to visit, and Apple is also gearing up to start showing ads in Maps.

Apple is testing end-to-end encryption for RCS messages between iPhone and Android users again, and there are proximity pairing, notification forwarding, and Live Activities for third-party wearables in the EU.
This article, "Apple Releases Second iOS 26.5, iPadOS 26.5, tvOS 26.5 and watchOS 26.5 Public Betas" first appeared on MacRumors.com

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