iPadOS 9.9.12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2019-05-07T17:03:32Z. The update package is 2.34 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: aff3a2e6d520555ffc75b9851e084a3871f851c7.zip.