iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2019-04-29T17:35:50Z. The update package is 382.72 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: 60aff2b16c9231d54932a359c643bb2fff24547a.zip.