iPadOS 12.1.3 (build 16D40) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2019-01-22T18:14:57Z. The update package is 312.39 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 624a3c7085286b7b6b4af87c578aefc0e57fcff5.zip.