iOS 9.9.17.1 (build 21B6074) is an official Apple over-the-air update for the iPhone 13 Pro Max, released on 2023-10-25T17:24:18Z. The update package is 5.83 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: 8d236c9f64d66c3a421b5e312df555ffe5f6fd53.zip.