iOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2023-01-23T18:49:31Z. The update package is 1.2 GB. This is a delta (partial) update that requires 15.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fe056ff24d7fa5fbd798004cff33123acf1f402b.zip.