iOS 9.9.16.6 (build 20G75) is an official Apple over-the-air update for the iPhone X (GSM), released on 2023-07-24T17:29:52Z. The update package is 4.5 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: 9fc6f7102d6dd724eb53fa8f5e90a70b1b4b0b90.zip.