iOS 9.9.13.1 (build 17A5821e) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2019-08-27T17:29:04Z. The update package is 2.74 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: 13774b9f14e01beb8b4b04c4f14b35adc79f6c90.zip.