iOS 9.9.17.4 (build 21E219) is an official Apple over-the-air update for the iPhone XS, released on 2024-03-05T18:18:22Z. The update package is 5.61 GB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 345895ac287e84cd716173aaec41be3499fd41e8.zip.