iOS 7.1 (build 11D5145e) is an official Apple over-the-air update for the iPhone 4 (CDMA), released on 2014-02-04T17:56:33Z. The update package is 34.56 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: 504aedd0f945427ddcb2bfca17222af911cd7a0d.zip.