iPadOS 9.9.13.4.5 (build 17F5044d) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, Cellular), released on 2020-04-15T17:15:27Z. The update package is 3.18 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: c232eb3423813c83e33129d821493ad56e870292.zip.