iOS 13.0 (build 17A5534f) is an official Apple over-the-air update for the iPhone 6s, released on 2019-07-17T17:35:19Z. The update package is 733.51 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: abd4c6af4fb86ed7d32674a61c161da0fe425157.zip.