iOS 9.9.16.5 (build 20F66) is an official Apple over-the-air update for the iPhone 13, released on 2023-05-18T17:13:55Z. The update package is 4.95 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: 6bdc90bd74d3bd4d6ce3f53c7fbe0cace1dfdedd.zip.