iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2018-05-01T17:05:51Z. The update package is 173.48 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: cc290d04ca2180b11a2cf2e75a3f051b9f433597.zip.