iOS 9.9.12.1 (build 16B5084a) is an official Apple over-the-air update for the iPhone X (Global), released on 2018-10-15T17:03:19Z. The update package is 2.55 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: ef830f30ed5a968358cc397b57e3f316e5f21ddd.zip.