iOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2023-01-23T18:49:34Z. The update package is 3.1 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: 355858bb4003d5edc13cb6f09c16e40c9789825e.zip.