iOS 9.2 (build 13C75) is an official Apple over-the-air update for the iPhone 4s, released on 2015-12-08T18:03:58Z. The update package is 898.74 MB. This is a delta (partial) update that requires 8.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 955324d26e4cea815375fafebd2b315692d5bd7d.zip.