iPadOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2019-03-27T17:06:09Z. The update package is 306.4 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a027233de6d66370ace4cdfb7fa3aa040a3cbdda.zip.