iOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2023-01-23T18:49:36Z. The update package is 1.18 GB. This is a delta (partial) update that requires 15.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2e83f35a86779d2a26b3374826190cafa8ad8d60.zip.