Been trying to jailbreak iphone 4 with redsnow. I have been following the instructions on iClarify, when instructed by redsnow I turn the phone of with it still connected. After waiting for it to switch of I click next which is were it would ask for me to hold the power button, etc. But I never get the chance, it gives the instructions but then goes to next screen and says there was an error and should use a different usb port. Am i missing something?