iPadOS 12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi), released on 2018-12-19T18:06:50Z. The update package is 279.58 MB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 31dab1823caf5ba9e8d515bd380212d9e4631baf.zip.