iOS 9.9.11.4 (build 15F5077a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-05-14T17:17:12Z. The update package is 1.91 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: 37357fb96ad6cd071ae63bff81db513ecb0f08ce.zip.