Apple перестала подписывать iOS 12.3, 12.3.1 и 12.3.2, а значит их больше нельзя установить. Теперь актуальная прошивка — iOS 12.4.
Apple stops signing iOS 12.3 and more following release of iOS 12.4 — 9to5Mac
Apple today has stopped signing iOS 12.3, iOS 12.3.1, and iOS 12.3.2 following last week?s release of iOS 12.4. This prevents users from downgrading from iOS 12.4 to a previous version of iOS. Apple generally stops signing older releases of iOS within a few weeks of releasing an update to the public. iOS 12.4 was ?
9to5mac.com
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