iOS 9.9.15.4.1 (build 19E258) is an official Apple over-the-air update for the iPhone 11, released on 2022-03-31T17:14:45Z. The update package is 5.01 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: c97d504fa1e05b423fc709e4b84a52259cd88571.zip.