iOS 9.9.13.4.5 (build 17F5044d) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2020-04-15T17:15:39Z. The update package is 2.91 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: fd96e8712965a6d7aedabf69efa5519241b352f4.zip.