iPadOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2019-01-10T18:08:44Z. The update package is 226.19 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: 36fd75ce9220d5e6b0b2452989dabd33c2b6e923.zip.