With the discontinuation of signing for iOS 26.4 today, users are now unable to revert to this version after the recent update to iOS 26.4.1. The decision was made by Apple shortly after the new version's release, which aimed to enhance stability and address security issues.
Although the release notes for iOS 26.4.1 primarily highlighted bug fixes, it did rectify an iCloud syncing issue that had been reported by some users. Notably, there were no security vulnerabilities listed for this version on Apple's security site, indicating a focus on performance rather than urgent fixes.
If users were considering downgrading, the opportunity has now passed, as Apple typically ceases to sign older versions to encourage adoption of the latest software. This practice reflects the company's strategy to maintain a secure and efficient operating environment for its devices.