iOS 13.4 (build 17E5249a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2020-03-03T18:20:10Z. The update package is 152.77 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4ba4029fa4536c78cacc7e40d088e33e84e4a123.zip.