iOS 9.9.15.3 (build 19D50) is an official Apple over-the-air update for the iPhone 13, released on 2022-01-26T18:14:51Z. The update package is 4.83 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: 7e874ebb1795f68b04b42839652f53ae96d16674.zip.