iOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2023-03-27T17:13:27Z. The update package is 2.35 GB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b12ae56e62a56b54eb9f3ceea7032eeb049e6c1e.zip.