iOS 9.1 (build 13B143) is an official Apple over-the-air update for the iPhone 5c (GSM), released on 2015-10-21T17:16:02Z. The update package is 195.52 MB. This is a delta (partial) update that requires 9.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2ca19f7931866a8156d07bfeb00c889798d9bd82.zip.