iOS 13.4 (build 17E5249a) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2020-03-03T18:20:22Z. The update package is 801.02 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9bb59ace74322397c98a23ed4228e46e34c54f7a.zip.