iOS 15.7.3 (build 19H307) is an official Apple over-the-air update for the iPhone SE, released on 2023-01-23T18:49:26Z. The update package is 1.22 GB. This is a delta (partial) update that requires 15.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cba5e2d060442027039b45d3eb6ef067a40727aa.zip.