iOS 13.4 (build 17E5223h) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2020-02-05T18:17:22Z. The update package is 801.68 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a53dc39cb3a01e9e148ce3398be639c39abf2f63.zip.