iOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2023-03-27T17:13:01Z. The update package is 1.25 GB. This is a delta (partial) update that requires 15.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7766f9dc5c35b995d4b05fc60cd29987047b0d6b.zip.