iOS 9.9.13.0 (build 17A5572a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2019-08-21T17:05:18Z. The update package is 2.9 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: b1cd80f8c0c81cb272117fc2e748644c5fc187d9.zip.