iPadOS 11.4.1 (build 15G5072a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-06-18T17:05:31Z. The update package is 160.26 MB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 30494b48c4237d838cf27f6bbebe22317368fb2d.zip.