iPadOS 9.9.12.5.1 (build 16H22) is an official Apple over-the-air update for the iPad Air (China), released on 2021-01-11T18:14:31Z. The update package is 2.06 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: 417e2b3c3b2b67c6713447be55e2aadeca661478.zip.