iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2019-05-10T17:09:12Z. The update package is 382.98 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: f39746245d245fa44d2d2913128e91a8036ac942.zip.