iPadOS 9.9.13.4 (build 17E255) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2020-03-18T17:21:56Z. The update package is 2.91 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: c2b2b0338f8e44aa6123dd7aaa478f3eac4d2c2d.zip.