iOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2017-11-16T21:22:56Z. The update package is 290.89 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: 132324651947070a52983c6df280e8a1475a987a.zip.