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 488.2 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: bf9d8a7f13e4f29fd5281aee4663aa8464cfc745.zip.