iOS 9.9.16.4.1 (build 20E252) is an official Apple over-the-air update for the iPhone X (GSM), released on 2023-04-07T17:13:41Z. The update package is 4.49 GB. This is a delta (partial) update that requires 11.2.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 509416e4c9e556067da4fce0a4d49ecd51e2c09b.zip.