iPadOS 11.2.5 (build 15D5046b) is an official Apple over-the-air update for the iPad Air (China), released on 2017-12-19T18:03:15Z. The update package is 81.17 MB. 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: bd517fa66eaef132cb818dee0118acf008911cd5.zip.