iOS 9.9.11.2 (build 15C5092b) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2017-10-30T17:03:06Z. The update package is 1.83 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e490c1b2f77476f0ba0956919083f5854b5c7594.zip.