iOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2017-10-23T17:06:02Z. The update package is 308.23 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: 37230cd7d6c658c5d90248b0df4f9ea9d90a2f9c.zip.