iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-05-29T17:14:36Z. The update package is 719.81 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 39e7289191f0ed67464a561cfdd9ca680e71731b.zip.