You will no longer be able to downgrade your Apple device
Apple recently released iOS 15.0.1, but no longer signs code for iOS 15, which was released to the general public on September 20. This means that users of the latest iOS upgrade on Apple iPhones will no longer be able to downgrade to an older version.
So, even if you want to, you can’t downgrade if you’re already on iOS 15.0.1 or have upgraded to the iOS 15.1 beta version. iOS 15.0.1 was released last week with the goal of fixing difficulties reported by various iPhone owners after installing iOS 15.
The update fixed a problem preventing some iPhone 13 customers from using the Unlock with Apple Watch feature. The update also fixed a bug in which the Settings app incorrectly indicated that the storage is full, as well as an issue in which some Fitness+ subscribers could get an unexpected workout tracking from Audio meditations on Apple Watch.
When a new iOS update is released, the company regularly stops certifying legacy programs in order to keep more devices on feature-rich versions and to safeguard consumers from fraudsters who try to exploit newly identified weak links.
Although Apple does not suggest downgrading to an older version of iOS, many iPhone users who jailbreak their devices do so. When users encounter battery troubles or other bugs after installing a new iOS build update, many attempt to downgrade to an older release.
iOS 15 is a major version update that includes features like Live Text, Focus Mode, SharePlay, Virtual Look Up, a new Safari browser, and other security fixes. It was first presented at WWDC in June 2021. Updates are only available for iPhones released after 2015, including the iPhone 6S. To update your smartphone to the newest version, go to Settings > General > Software Update.