iPadOS 12.1.2 (build 16D5024a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-12-10T18:08:49Z. The update package is 229.2 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ecb2f9ff64daef554c29511788ca57ccd614e1d1.zip.