iOS 13.4 (build 17E5249a) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2020-03-03T18:20:07Z. The update package is 825.39 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: 0b4a07bed3f70218612ef8e649ac55c3df2428f7.zip.