iOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2023-03-27T17:13:02Z. The update package is 3.22 GB. This is a delta (partial) update that requires 13.7 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 00da2119943607a9ee0aad771692f418f834ff3d.zip.