iPadOS 12.1.3 (build 16D5032a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2018-12-19T18:06:46Z. The update package is 219.02 MB. This is a delta (partial) update that requires 12.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 367100042760d1e0f122a2ccb4e9269a3047b5e1.zip.