I have an iPhone 3gs and I'm tying to jailbreak using redsn0w .8. I have haven't used the 3.1 beta. I am however using a mac. Once I open redsn0w I get all the way to the part where you start the iPhone up in recovery mode. I turn it off and hold the home button and plug it into my computer, but redsn0w doesn't recognize it. Any help would be great.