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 178.78 MB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1fdf782590144b0d13e30e0698caae3cde596b24.zip.