iOS 13.0 (build 17A5572a) is an official Apple over-the-air update for the iPhone 6s, released on 2019-08-21T17:05:22Z. The update package is 203.54 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: 70108557e606d32f8755fb75b546c3d06d7fe4ff.zip.