iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-10-30T17:15:34Z. The update package is 1.53 GB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b085c6da9b4b55efda8be7f60ca05f71004d64e5.zip.