Apple has ended the ability to install iOS 18.3 on iPhones, meaning those who updated to iOS 18.3.1 can’t go back to the previous version. The company rolled out iOS 18.3.1 about a week after the release of iOS 18.3.
iOS Updates
Apple tends to stop signing older iOS versions shortly after newer ones come out, typically within one to two weeks. Once an older version stops being signed, you can’t put it on your iPhone anymore because of a check that happens on Apple’s servers. This practice pushes people to keep their phones updated. By not letting users revert to older software, Apple makes sure everyone has the latest security fixes.
Why Update Matters
The update to iOS 18.3.1 brought several bug corrections and security patches. Notably, it fixed a security hole that hackers were already using, which shows why keeping your iPhone’s software current is crucial.