I am trying to jailbreak my iphone 4g, it is running iOS 4.3.5. I am using redsn0w 0.9.9b1 (windows). I follow the dfu mode instructions correctly and I have done this many times but the application still says it cannot detect the device. My computer recognises the DFU mode iphone stating it has found new hardware Apple Mobile Device (DFU Mode) and that it needs to install driver software. I tried installing the driver software but windows vista cannot find it. Please help this is really irratating. My OS is Windows Vista.