iOS 9.9.16.3.1 (build 20D6067) is an official Apple over-the-air update for the iPhone 13, released on 2023-02-13T18:23:16Z. The update package is 4.77 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: a71e0dfc9c1674c6e99e4e8bfa63fcf4670dd24f.zip.