iPadOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2019-01-10T18:08:51Z. The update package is 319.96 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: 6d64a30ad5411a9f887fa6930163f15c2846fad7.zip.