iOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2019-09-04T17:06:27Z. The update package is 265.65 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: 942196331a48bf3d9c2c690f0e7778537b385001.zip.