On January 26, 2026, Apple implemented multiple security updates. One of these was an update for iOS 12, and the target devices included the “iPhone 5s” released in September 2013.
Apple security releases – Apple Support (Japan)
https://support.apple.com/ja-jp/100100
About iOS 12 Updates – Apple Support
iOS 12.5.8, released in 2026, expands the certificates required for features such as iMessage, FaceTime, and device activation, and these features will continue to function after January 2027.
The devices eligible for the update are iPhone 5s, iPhone 6, and iPhone 6 Plus.
When we checked the iPhone 5s that was sleeping in the editorial department, we found that a 313MB update had been distributed.
The update was implemented to iOS 12January 2023It was about yellowtail.
Apple promises to provide security updates for at least five years after the iPhone’s release, but it often provides vulnerability fixes for a longer period of time. For example, iPhone 6sSeptember 2025A security update was released with the release of iOS 15.8.5. At the same time as iOS 12.5.8, the iOS 15.8.6 update was released, which also added certificate extensions.
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