iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-10-30T17:06:49Z. The update package is 1.27 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8587fc49aecea1516bfa98bd6c088f120fe3884b.zip.