iPadOS 11.2.1 (build 15C153) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2017-12-13T18:10:09Z. The update package is 514.42 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fc83fb0ddb37a09da402340256a571cfb2fcdb7e.zip.