Apple last week seeded the first iOS 18.4 beta to developers for testing, but the software update has been pulled for some devices due to issues.
According to MacRumors contributor Aaron Perris, the first iOS 18.4 beta is no longer available for installation on any of the iPhone 12 mini, iPhone 12, iPhone 12 Pro, or iPhone 12 Pro Max models, along with select older iPad Air and entry-level iPad models.
The first iOS 18.4 beta was causing some iPhone 12 models and other affected devices to experience a "boot loop," rendering the device unusable. This is one reason why Apple always stresses backing up your iPhone before installing iOS betas, as pre-release software can experience critical bugs and issues from time to time.
iOS 18.4 beta 1 is now unsigned for the following devices: iPhone 12 ProiPhone 12 Pro MaxiPhone 12 MiniiPad 8 (Cellular)iPad Air 4th Gen (Wi-Fi and Cellular)iPad Air 11-inch (M2) (Cellular)iPad Air 13-inch (M2) (Cellular) (h/t @dhinakg) https://t.co/esVqZ13cdy— Aaron (@aaronp
