iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-10-30T17:15:46Z. The update package is 1.49 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2a091b03c0694f71c928a2c232b1136cfea45654.zip.