iPadOS 11.3 (build 15E5216a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-03-16T17:05:13Z. The update package is 54.15 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 243d5baf04e24a694ac99e35d23d9d31b5e05a39.zip.