iOS 9.9.17.2 (build 21C62) is an official Apple over-the-air update for the iPhone XS, released on 2023-12-11T18:16:56Z. The update package is 5.57 GB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2ea14ddc6ee5abb62255cf01c2d43ea348f79791.zip.