iOS 13.0 (build 17A5556d) is an official Apple over-the-air update for the iPhone 6s, released on 2019-08-07T17:04:53Z. The update package is 281.31 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: 82147ed4c59884bda6fa4bb8259afbd3a9385763.zip.