iOS 13.1 (build 17A5844a) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2019-09-18T17:07:09Z. The update package is 87.94 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: bf23f23412045465702459de1d0419ce2bf8b583.zip.