iOS 9.9.15.1.1 (build 19B81) is an official Apple over-the-air update for the iPhone 13, released on 2021-11-17T18:13:12Z. The update package is 4.89 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: 69a041c2be6dc0d2284bada396dfa05de245f3d4.zip.