iOS 9.9.13.0 (build 17A577) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2019-09-19T17:08:21Z. The update package is 2.94 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: 5a5f6d1f01d5b84594e3998a7e9d7b24580f7972.zip.