iPadOS 11.4 (build 15F79) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2018-05-29T17:14:58Z. The update package is 1.25 GB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b8d82d71f48cb609a28747d7ec62211ed56a075e.zip.