iOS 12.1.1 (build 16C5050a) is an official Apple over-the-air update for the iPhone 8 Plus (Global), released on 2018-11-15T18:04:49Z. The update package is 411.23 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 513abb81575374436ccc7ed3bb8c0ab6765831a1.zip.