iPadOS 11.1 (build 15B5078e) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2017-10-09T17:02:02Z. The update package is 122.72 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cbde461703e40300a4ab65b41d339c5668408e99.zip.