iOS 13.0 (build 17A5534f) is an official Apple over-the-air update for the iPhone 6s+, released on 2019-07-17T17:35:20Z. The update package is 532.69 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: 5f4cebb2652d97339b1a1d55fbd3c3714c6c0754.zip.