iPadOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-01-10T18:08:40Z. The update package is 224.79 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: 8ebe5c08d8d7bccdd0b01320a2f4df45c11aa186.zip.