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Apple stops signing iOS 26.5, blocking user downgrades

Apple has stopped signing iOS 26.5, preventing users from downgrading to the previous version, iOS 26.4.2. This change was implemented within the last 24 hours after the release of iOS 26.5 last week. Users are now unable to revert to an older iOS version once they have updated. AI

Summary written by gemini-2.5-flash-lite from 1 sources. How we write summaries →

IMPACT This change impacts user control over software updates but has no direct bearing on AI development or deployment.

RANK_REASON This is a product policy change by Apple that affects user control over software versions, but it is not a major industry-wide event.

Read on Mastodon — fosstodon.org →

COVERAGE [1]

  1. Mastodon — fosstodon.org TIER_1 · [email protected] ·

    iOS 26.5 won’t let users downgrade to prior update any longer Apple shipped iOS 26.5 to all users last week, and now in the last 24 hours, the company has stopp

    iOS 26.5 won’t let users downgrade to prior update any longer Apple shipped iOS 26.5 to all users last week, and now in the last 24 hours, the company has stopped signing iOS 26.4.2—thus preventing downgrades to a prior update. more… https:// 9to5mac.com/2026/05/20/ios-26- 5-wont…