iOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPhone 8 (Global), released on 2019-09-04T17:06:09Z. The update package is 513.44 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: e7aec43c4898a653393f403bc631c1d33e4e4780.zip.