iPadOS 12.1.3 (build 16D40) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi), released on 2019-01-22T18:14:56Z. The update package is 312.39 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: c078aaea386b2a5b5ef6f6b8dead9ab22024857f.zip.