iPadOS 9.9.12.1 (build 16B5059d) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-09-18T17:20:08Z. The update package is 2.01 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4477081b42b24f09a0b29d2b425e7eef1340d3af.zip.