iOS 7.1.2 (build 11D257) is an official Apple over-the-air update for the iPhone 4s, released on 2014-06-30T18:00:03Z. The update package is 24.16 MB. This is a delta (partial) update that requires 7.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: abd80c67a41e8992ee19813abc2cf650607fd5f7.zip.