iOS 9.9.17.3.1 (build 21D61) is an official Apple over-the-air update for the iPhone 11 Pro, released on 2024-02-08T18:32:56Z. The update package is 5.44 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: e1700e280a5bf99d8c01a19ae1cc5d7c226d09b9.zip.