Apple Blocks Downgrades as iOS 26 Becomes the Only Option

Apple has closed the door on downgrades for iPhones running its latest software. The company has officially stopped signing iOS 18.6.2, which means anyone who installs iOS 26 can no longer return to the previous version.

iOS 26 rolled out on September 15, 2025, for the iPhone 11 through iPhone 17 series, as well as the iPhone SE. Now, less than two weeks later, Apple has removed the option to install older builds. For supported devices, iOS 26.0 is the only version that remains signed and available.

Apple’s system of digital signing is designed to protect users. Every iOS update must be verified by Apple before it can be installed. As soon as a version is no longer signed, apps like iTunes or Finder won’t grant upgrade and downgrade requests. This ensures that devices only run the most up-to-date software Apple wants available.

The end of signing for iOS 18.6.2 means there’s no way to roll back from iOS 26. Even though Apple did release iOS 18.7, it was only distributed as an over-the-air update for iOS 26-supported devices.

With no IPSW restore files released, users cannot install it manually. That leaves iOS 26 as the single path forward.

Users who stayed on iOS 18.6.2, the update will continue to function as usual, but not for long. This iOS version will no longer get support, exposing its device to security risks and compatibility issues.

For iPhone owners, this change locks the software landscape. If you’ve upgraded to iOS 26, you are stuck there for now. If you held back, you can continue on iOS 18, but you will eventually need to update to stay secure and compatible.

The same rule applies to iPad and Apple TV. Alongside iOS, Apple has also stopped signing iPadOS 18.6.2 and tvOS 18.6.2. That means iPads and Apple TVs running those versions face the same situation: update to the latest release or remain behind with no downgrade path.

Apple’s signing policy has been around for years, but each new version underscores its strict control over the iOS ecosystem. Most users are of the opinion that this new version means better security and consistency. But for others, the end of iOS 18 marks the end of flexibility and choice.