iOS 9.9.15.4.1 (build 19E258) is an official Apple over-the-air update for the iPhone XS, released on 2022-03-31T17:14:45Z. The update package is 5.44 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: c7187be99802c7e4fe28e534a74e87cbd651d68e.zip.