iOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2017-11-09T18:11:55Z. The update package is 290.97 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 14c9f804b9e706d6a9f6970f974d2da6ee07a4b3.zip.