iOS 13.0 (build 17A5522g) is an official Apple over-the-air update for the iPhone 6s, released on 2019-07-08T20:10:52Z. The update package is 73.54 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: 3c4f44238e38e017ca874f08fae40ed39e52eb08.zip.