iPadOS 9.9.11.4 (build 15F5077a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-05-14T17:17:04Z. The update package is 1.8 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: 34c686586f2d136acd613d88773b3ac5f6087b61.zip.