iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-10-30T17:15:57Z. The update package is 493.54 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 925aeb3e7de4089419923b0badb076a95b1cb28f.zip.