iOS 9.9.15.2.1 (build 19C6063) is an official Apple over-the-air update for the iPhone XS, released on 2022-01-12T18:07:02Z. The update package is 5.55 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: dcfff15ca39365d2261493decd5727b9e8b92389.zip.