iOS 8.2 (build 12D508) is an official Apple over-the-air update for the iPhone 4s, released on 2015-03-09T18:49:04Z. The update package is 294.7 MB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fe0a3f4ae7f02e685b7696d9db7da13f2166531e.zip.