iOS 13.0 (build 17A5522f) is an official Apple over-the-air update for the iPhone 6s, released on 2019-07-02T17:58:53Z. The update package is 597.73 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: 34e6945eae53be761b8896c212aa7040fd3fbddb.zip.