iOS 8.1.1 (build 12B435) is an official Apple over-the-air update for the iPhone 4s, released on 2014-11-17T18:06:06Z. The update package is 79.19 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: b88c72dc18119bb3a9e3e9b5b8b7272679ff30c0.zip.