iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-01-22T18:07:14Z. The update package is 1.68 GB. This is a delta (partial) update that requires 10.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 35a61c2fc3b7472739c9684ec0ffd49d24ee640e.zip.