Apple iPhone users can’t revert to iOS 18.6.2 after updating to iOS 26: Report

Apple has officially ceased signing the iOS 18.6.2 update, meaning that iPhone users who have upgraded to the newly released iOS 26 can no longer downgrade to the previous version. This development comes just a week after the launch of iOS 26, which is part of Apple’s ongoing effort to maintain device security and consistency. When Apple stops signing a particular iOS version, it indicates that the software no longer meets the company’s server-side verification standards, a necessary process for installing updates on iPhones. As a result, users are unable to revert to older software, which may be less secure, as reported by MacRumors. While Apple does not mandate users to upgrade to iOS 26, the decision to halt signing older versions effectively eliminates the option for those who have already made the switch. This restriction is not limited to iPhones; Apple has also stopped signing iPadOS 18.6.2 and tvOS 18.6. Consequently, users of iPads and Apple TVs will find themselves in the same situation, unable to revert to earlier versions after upgrading. Users who have not yet updated their devices can continue using iOS 18. However, anyone who transitions to iOS 26 will need to familiarize themselves with the latest features and interface changes, as downgrading is no longer an option. This practice aligns with Apple's strategy to ensure that devices operate on the most secure and optimized software, reducing vulnerabilities linked to outdated versions. iOS 26 introduces a revamped interface and an expanded integration of Artificial Intelligence (AI) across compatible iPhone models. One of the most noticeable updates is the new ‘Liquid Glass’ design language, which provides a translucent appearance to apps, icons, and controls, creating an optical quality reminiscent of glass. Additionally, the Lock Screen has undergone significant changes, with the time display adapting dynamically to the selected wallpaper. Notifications reposition themselves to keep the focal subject of a photograph visible, and a subtle three-dimensional effect is activated when the device is moved. The Home Screen features redesigned app icons that offer options for light and dark modes, color tints, or a transparent style. Elements of the Control Centre and in-app controls have been refined to respond to their environment, enhancing the overall user experience by creating a more cohesive operating system across applications. Stay tuned for more updates on the anticipated price, features, and launch date of the iPhone 17, including the Pro, Pro Max, and Air models.