iOS 13.1 (build 17A5821e) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2019-08-27T17:29:13Z. The update package is 420.6 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: 23d0b7853bb5babaaa2660ff97f1906808d4a723.zip.