iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2019-01-22T18:06:37Z. The update package is 416.51 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 703a498753f79a2d6fc19802bd6bbede81acc90b.zip.