iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2019-01-22T18:07:36Z. The update package is 292.04 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: 8a590ac65e7bbd569541c4ce6069fd18374a669e.zip.