iOS 9.9.13.4 (build 17E5255a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2020-03-10T17:21:23Z. The update package is 2.87 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: 6e2a1c9558c5ae46923eba97db4febefe0a84af7.zip.