iPadOS 9.9.13.4.1 (build 17E262) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, WiFi), released on 2020-04-07T17:13:40Z. The update package is 3.13 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: dc26921fcc688ea3cf840fc3fb8dc7fcdeeecf97.zip.