iOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2023-03-27T17:13:06Z. The update package is 1.43 GB. This is a delta (partial) update that requires 15.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f3894aa7295a2fa767b0091ceb86e4aca50f5eda.zip.