iPhone users looking to revert their device firmware have run out of options, as downgrading to iOS 26 can no longer be done. Apple has officially stopped signing the software build, which effectively blocks users from installing the version through standard restoration methods.
This move aligns with Apple's routine maintenance strategy following newer firmware rollouts. The company systematically stops signing older releases to keep users on the most current operating system, ensuring devices benefit from the latest security patches, bug fixes, and system improvements.
Because the signing window is now closed, any iPhone running a newer update cannot roll back to iOS 26 via Finder or iTunes. While users who are currently running the release can continue using it, any future update will be permanent.
Please check the original report on iLounge for full details on this update.
