iOS 13.0 (build 17A5556d) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-08-07T17:04:49Z. The update package is 386.1 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: 61bb1344f85c41689840aa95822046fa0e6d7d0f.zip.