iOS 10.0 (build 14A5345a) is an official Apple over-the-air update for the iPhone 5c (GSM), released on 2016-08-19T17:36:28Z. The update package is 38.5 MB. This is a delta (partial) update that requires 10.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fb04e22a26480222d9f1bb9650809f5e72e65e60.zip.