iOS 9.1 (build 13B137) is an official Apple over-the-air update for the iPhone 5c (GSM), released on 2015-10-12T16:56:55Z. The update package is 1.17 GB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 06794d0326ae004733a032fa058ae07c2307746a.zip.