iOS 9.9.15.4 (build 19E241) is an official Apple over-the-air update for the iPhone 13, released on 2022-03-14T17:14:08Z. The update package is 4.82 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: 9551eb98d11c376471ee53ff5bc85911cca52e81.zip.