iPadOS 9.9.11.2.1 (build 15C6153) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2017-12-13T18:03:11Z. The update package is 1.69 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 461af65d979a42f7d0661829aaaebed2be6c9e99.zip.