iOS 13.0 (build 17A5534f) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-07-17T17:35:16Z. The update package is 637.25 MB. This is a delta (partial) update that requires 13.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 85062a5dd024d2acebe78c2019661f105ec271ca.zip.