iOS 9.9.17.6 (build 21G80) is an official Apple over-the-air update for the iPhone 13, released on 2024-07-29T20:34:53Z. The update package is 5.75 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: 837501118f0f614a291b7f10df904f13e1f3ca80.zip.