So I've been trying to root my Sprint Galaxy S2 with the "easy method" you've shown with the one click extractor deal, and I get my phone to boot into that custom OS screen, plugs in, PC recognizes the phone, ODIN sees it, registers as COM3, I click start, it sits there working for a bit and then fails, every time I try it. I tried using other methods from the XDA Dev site, no dice. I loaded the official ICS about a week ago, so I'm thinking that might be messing things up. I tried to load GB back on it with ODIN, that doesn't work either. Any suggestions?
Make sure you are not using USB Hub, also turn off Kies if running,
and try another USB hub.
VN:F [1.9.17_1161]Epic 4G Touch Issues with ODIN,