iOS 9.9.16.4 (build 20E247) is an official Apple over-the-air update for the iPhone XS, released on 2023-03-27T17:12:29Z. The update package is 4.83 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: 0e88ce0ea265ecc11734d71e6a0de99e1b111f5e.zip.