iOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2023-03-27T17:13:07Z. The update package is 1.26 GB. This is a delta (partial) update that requires 15.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4caf94224a563d5dd4a0ea68c3965f5425457b3d.zip.