iOS 11.2 (build 15C5107a) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2017-11-13T18:04:25Z. The update package is 196.24 MB. This is a delta (partial) update that requires 11.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 04b0a8b209329543835d2697e3a1d4525749ec47.zip.