iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-05-29T17:15:17Z. The update package is 715.35 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c64f9b827d85d53bba45ca1d2a100631370d87bb.zip.