Iphone 4 jailbreak ios 6.1.3?

I've been looking around for a while now for a way to jailbreak my iPhone 4 ios 6.1.3. If there's any way to jailbreak it, please let me know it would save a lot of time. I don't care if it's tethered, semi or untethered. I just want a jailbreak.

ICrackurdevice has the most safest and easiest way in my opinion. Look him up.

However he says TeamDev won't be releasing a jailbreak until iOS 7

Try cydia