Apple has released two software updates to iOS 18.6. Since the iPhone software update has shipped without issue, and one contained a major security patch, Apple has stopped signing the older iOS 18.6 software version.
Apple stops signing versions of iOS due to security issues being disclosed in older software versions and patched in newer software versions.
Apple released iOS 18.6 on July 29. The update included bug fixes, security improvements, and a fix for a performance issue with the Photos app’s Memories feature. The update also included a change to how third-party app marketplaces are handled in the EU.
Apple separately detailed the full list of security improvements that were made in iOS 18.6.
More recently, Apple released iOS 18.6.1, re-enabling blood oxygen readings from Apple Watch in the US, and iOS 18.6.2, a major security update.
Next month, Apple is expected to release iOS 26 after beta testing versions with developers and public beta testers since June.
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