iOS 9.9.12.4 (build 16G5056d) is an official Apple over-the-air update for the iPhone X (GSM), released on 2019-06-24T17:17:23Z. The update package is 2.61 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: a56be6b24c7d92245bf3e3b0a52022289025982b.zip.