iOS 9.9.15.5 (build 19F77) is an official Apple over-the-air update for the iPhone X (GSM), released on 2022-05-16T18:25:05Z. The update package is 4.26 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: 4b6c9584f31fcb0fea63521d70221e79a8b4d230.zip.