iPadOS 11.2.5 (build 15D5057a) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2018-01-11T18:03:00Z. The update package is 129.78 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: 3b28816ec8a69a372f73668124c9034bd86ed9a5.zip.