iOS 9.9.17.5.1 (build 21F90) is an official Apple over-the-air update for the iPhone 11, released on 2024-05-20T17:23:30Z. The update package is 5.41 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: 531b557298ef6c727d71602a7006a517dc51e345.zip.