In a foreseeable turn of events, Apple this week stopped signing the iOS & iPadOS 18.2.1 firmware for iPhones and iPads, which effectively precludes anyone owning these devices from voluntarily downgrading from the newer iOS & iPadOS 18.3 firmware that the Cupertino-based company released at the end of last week.
Apple stops signing iOS 18.2.1, ending downgrades from iOS 18.3