iPadOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi, 1TB Model), released on 2019-01-10T18:08:47Z. The update package is 94.47 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bc1fd13a4e2d3e8fdb76b35a6aae2b184557bc3c.zip.