iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone SE, released on 2018-05-29T17:16:51Z. The update package is 766.43 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1d1407d6d3139a3b32e464631f7e41b918cc44aa.zip.