iOS 11.0.2 (build 15A421) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2017-10-03T17:03:26Z. The update package is 273.5 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d6042f9d8d2287fa73ef31a01ac647dec2d0acfd.zip.