iPadOS 11.2.5 (build 15D5057a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-01-11T18:02:59Z. The update package is 129.79 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: c26f547b615b9e717ac9421dba860fd4cce142d9.zip.