iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad Air (China), released on 2018-10-30T17:04:45Z. The update package is 1.19 GB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1f7d1b993d7add827c821ed4315bc31345687fce.zip.