iPadOS 9.9.15.4.1 (build 19E6258) is an official Apple over-the-air update for the iPad Pro (12.9-inch, Cellular) (5th generation), released on 2022-03-31T17:14:01Z. The update package is 4.65 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: c358806b5643ef10fe66310adb8c0c8660a9bade.zip.