iOS 9.9.15.2.1 (build 19C6063) is an official Apple over-the-air update for the iPhone X (GSM), released on 2022-01-12T18:07:02Z. The update package is 4.33 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 923ec11ff9edbc01b7da26c26183178c5521352d.zip.