If you have recently upgraded to iOS 26, but are considering downgrading back to iOS 18.6.2, then we have some bad news. It was revealed in a recent post on X by Aaron Perris that Apple is no longer signing iOS 18.6.2. However, it seems that Apple is still signing iOS 18.7, which Apple also released on Monday as an alternative to iOS 26. You can no longer downgrade from iOS 26 as Apple has just stopped signing iOS 18.6.2September 22, 2025This move isn’t entirely unexpected, as Apple historically waits one or two weeks before it stops signing iOS versions. iOS 26 has also been accused of degrading many devices' battery life and overall performance, especially on older phones.