iPadOS 12.1.3 (build 16D40) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular), released on 2019-01-22T18:14:58Z. The update package is 381.16 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1dc25277ece07b80992115c9a52498b4e36669be.zip.