iPadOS 9.9.13.7 (build 17H35) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, WiFi), released on 2020-09-01T17:20:34Z. The update package is 3.19 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: 8b15424fbb6e48117f6f580040dbe5b4d1708e05.zip.