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Apple blocks iOS 26.5.1 downgrades after security update

Apple has ceased signing iOS 26.5 and iOS 26.5.1, effectively blocking users from downgrading to these specific versions. This action follows the recent release of a critical security update for iPhones, indicating a move to ensure users remain on the latest, most secure software. AI

RANK_REASON This is a product update related to software signing and version control, not a core AI release or significant industry event.

Read on Mastodon — fosstodon.org →

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Apple blocks iOS 26.5.1 downgrades after security update

COVERAGE [1]

  1. Mastodon — fosstodon.org TIER_1 English(EN) · [email protected] ·

    Apple stops signing iOS 26.5.1 after critical security fix release Apple is no longer signing iOS 26.5 and iOS 26.5.1, preventing downgrades to these software v

    Apple stops signing iOS 26.5.1 after critical security fix release Apple is no longer signing iOS 26.5 and iOS 26.5.1, preventing downgrades to these software versions from newer releases. The move comes after a critical security fix was issued for iPhone last week. https:// 9to5…