iOS 9.9.15.2 (build 19C6056) is an official Apple over-the-air update for the iPhone X (GSM), released on 2021-12-13T18:27:10Z. 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: e57b4ecb0bfb7ae27465f8e6ed9fd4fb82bf54b8.zip.