iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2019-01-22T18:08:08Z. The update package is 1.8 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d7de049376c5f89a1fa1feb7431e0f23b4ad71a0.zip.