iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2018-12-05T18:09:46Z. The update package is 1.45 GB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a3f745a95c08c60f4eb97ffa48a74d52cc9be8e5.zip.