iPadOS 11.4 (build 15F5049c) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-04-16T17:07:45Z. The update package is 232.58 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 211859b258890c5d66cd37234269014fd003976a.zip.