iOS 12.2 (build 16E5181f) is an official Apple over-the-air update for the iPhone 6s, released on 2019-01-24T18:06:11Z. The update package is 631.24 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e29c2761832a4d6eb834e8f095a1a8900698c067.zip.