iPadOS 11.4 (build 15F5077a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-05-14T17:17:03Z. The update package is 248.72 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 665235b571984d6e553cecd8ae8312dc1841238a.zip.