iOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2023-01-23T18:49:33Z. The update package is 1.43 GB. This is a delta (partial) update that requires 15.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1b04e61ff60002f7a228c1576d4de84d99d75b6d.zip.