iPadOS 11.4.1 (build 15G5063b) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-06-11T17:21:43Z. The update package is 191.53 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: 1920853f2a29dbb11cc43ac7ffa987e85ecdc593.zip.