Apple changed the behavior of software updates for iPhones compatible with iOS 26, making the iOS 18.7.3 security version unavailable for most recent models. Usuários who are still using iOS 18 now only see the option to update to iOS 26.2 on the settings screen. The change affects devices from the iPhone 11 onwards, which receive the new operating system, but no longer have the security fixes in the previous version.
The recently released iOS 18.7.3 update fixes critical vulnerabilities in WebKit, including flaws that could allow arbitrary code execution via malicious web content. Relatos indicate that these issues were exploited in sophisticated attacks against specific targets in versions prior to iOS 26.
Change in update policy
Apple has adopted this practice since previous major iOS version transitions, as occurred between iOS 14 and iOS 15, when parallel support ended after a few months. The company considers the period of simultaneous availability to be temporary, encouraging adoption of the latest system. Older Dispositivos, such as iPhone XS, XS Max and XR, which do not support iOS 26, continue to receive iOS 18.7.3 normally.
Users initially reported that activating the public beta program allowed them to access iOS 18.7.3, but Apple removed this alternative in recent days. The decision comes after the release of iOS 26.2, which includes improvements to the Liquid Glass design and new privacy and connectivity features.
Impact for users who prefer iOS 18
Many iPhone owners choose to stay on iOS 18 due to concerns about app compatibility or a preference for the previous interface. The lack of a security update leaves these devices exposed to known vulnerabilities, even though iOS 26.2 offers the same protections. Apple recommends installing the latest version available to maintain device security.
The change does not affect iPads, which continue to support iPadOS 18.7.3 in parallel. Proprietários of iPhones compatible with iOS 26 should evaluate the update to avoid risks, as the security alternative in the previous version is no longer accessible.
Recently released security updates
iOS 26.2 and iOS 18.7.3 address more than 20 security issues, including issues with malicious data processing and code execution. Apple warns that flaws in WebKit have been actively exploited in targeted attacks. The company maintains a policy of providing critical patches quickly, but directs users to the current system on supported models.
The transition accelerates the adoption of iOS 26, released in September 2025, which introduces a visual redesign and advanced artificial intelligence integrations. Usuários who ignore the recommended update may experience limitations in protecting against emerging threats.
What to do in case of an unwanted update
For those who want to explore iOS 26, installation takes place directly in the iPhone settings. Apple does not force automatic updating, but highlights iOS 26.2 as the main option. Quem has older devices should check the availability of iOS 18.7.3 in the software settings.
