iOS 7.1 (build 11D169) is an official Apple over-the-air update for the iPhone 4 (GSM / 2012), released on 2014-03-10T16:59:00Z. The update package is 1.11 GB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5a98649ec4ccb3507ec57b2684143285f21bad57.zip.