iOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPhone SE, released on 2018-05-29T17:16:52Z. The update package is 766.42 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 709a64d7eeb65a0cd9665d11f57749e7f94b1f3b.zip.