im trying to use the cdma tool to flash a sprint iphone 4 on ios 6.1.2 and when I binded it gave m the usb to port error, I restored the phone and tred to re jb it with redsnow, with now success, redsnow gave me the exploit failed message, im currently running windows 8 on my laptop, is there any other way to bypass or work through this usb to port message so I can say I didn't was 150$ on two bindings that are unsuccessful?? any help would be greatly aprreciated