iPadOS 11.2.5 (build 15D60) is an official Apple over-the-air update for the iPad Air (China), released on 2018-01-23T18:25:55Z. The update package is 1.07 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3c67f067d4f5ad5ffbc5584f6ebbd0051d6cfd1d.zip.