iOS 9.9.17.0 (build 21A329) is an official Apple over-the-air update for the iPhone XS, released on 2023-09-18T17:34:31Z. The update package is 5.57 GB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f1c1d6f3d7264b9bc6d12d55015c0eca8a0fb2ee.zip.