iOS 8.4 (build 12H4125a) is an official Apple over-the-air update for the iPhone 5c (GSM), released on 2015-06-09T17:53:05Z. The update package is 139.04 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c28085efc488205c1866f7cfee2b6c3495659235.zip.