iOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2019-09-10T20:30:07Z. The update package is 222.02 MB. This is a delta (partial) update that requires 13.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4427d6bc7d997acb60e16cfd406b8ea3f5ef0f61.zip.