iOS 9.9.13.3 (build 17C54) is an official Apple over-the-air update for the iPhone 11, released on 2019-12-10T18:13:25Z. The update package is 3.27 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: 28a5d457d3bf88573cde9941c127850d246a868a.zip.