iOS 9.9.16.3 (build 20D47) is an official Apple over-the-air update for the iPhone X (GSM), released on 2023-01-23T18:48:50Z. The update package is 4.32 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: 35f35078133850b4903b7ee57c4a7b9ee81870d1.zip.