iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2017-11-09T18:09:06Z. The update package is 314.07 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7e41856cb8648ac98b891fefdaf982f182c73e5d.zip.