iOS 13.5 (build 17F5065a) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2020-05-06T17:08:48Z. The update package is 449.27 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: 036281a7c3d30ed3a462e675652c2129cca182d3.zip.