iPadOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-05-30T17:04:54Z. The update package is 194.51 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: 49aa036a03fd0b76cceb16c2585ef76086f1d516.zip.