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 919.91 MB. This is a delta (partial) update that requires 7.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2d45124a0516ce239d2803cae28fb8b3de736267.zip.