How to change jailbreak from semi-untethered to untethered ios 6.1.3 iphone 4?

I've got an iphone 4 with ios 6.1.3 with jailbreak semi untethered, I was wondering if there's a way through cydia to change the jailbreak to untethered, or any other way.

You can't change it through Cydia, you have to restore your iPhone through iTunes and jailbreak again. Hopefully you made a backup…

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