iOS 7.1 (build 11D169) is an official Apple over-the-air update for the iPhone 4 (GSM), released on 2014-03-10T16:58:58Z. The update package is 152.04 MB. This is a delta (partial) update that requires 7.0.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f09bf7841021e3c8ee77215b47542613801c0746.zip.