iOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2020-02-26T18:17:47Z. The update package is 824.71 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: f94e5903ec3c9c8de805bfa24b9cfb117277be68.zip.