iOS 8.0 (build 12A4345d) is an official Apple over-the-air update for the iPhone 4s, released on 2014-08-04T18:14:04Z. The update package is 192.56 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b0a90b40a3098907453b54ca5f8785c87dde90dc.zip.