After more than a week of releasing the iOS 18.3 update to bring some notable improvements and new features to users, Apple has officially stopped signing iOS 18.2.1. This move is not surprising to iOS users as Apple often stops signing old iOS versions to prevent users from downgrading. When an update is locked, it cannot be installed on the iPhone due to server-side software verification checks.
The iOS 18.3 update includes several Apple Intelligence updates and more than 20 security updates. One of those fixes addresses a vulnerability that may have been actively exploited on some devices, demonstrating why keeping your iOS software up to date is important.
Source: https://kinhtedothi.vn/apple-chinh-thuc-chan-nguoi-dung-ha-cap-ve-ios-18-2-1.html
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