iOS 11.1 (build 15B5086a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2017-10-16T17:04:12Z. The update package is 146.31 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1f5ee684e8457e7d6089fc6afa16b75860befeb4.zip.