How to Rejailbreak my iphone 5c?

So i jailbroke my phone but then it was having some problems so i uninstalled cydia. I want the jailbreak back but none of the jailbreaking applications work. I tried evasi0n7 but it never finishes. The i tried redsn0w but my phone will never enter DFU. I need solutions. I'm using a mac.

Try restoring the device in iTunes and then again perform the jailbreak

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