I've got a 2nd generation Apple TV, on 5.0(4099). I tried to jailbreak, and first time around I successfully jailbroke it, and performed a tethered boot and it all came up, with the FC logo replacing the settings. I then stupidly unplugged it, meaning I had to do another tethered boot. This time it wouldnt work. I tried again, it wouldnt work. I restored the apple tv, rejailbreaked and tried again. Still no luck. Am I doing something wrong? I perform everything it tells me to do. I selected tethered boot, I hold down play and menu for 7 seconds until it rapidly blinks, it goes into DFU mode, installs something on the device and then tells me to unplug the usb and put the hdmi cable in before the flashing stops. I do all this and the flashing doesn't stop. It goes on for about 5 minutes then turns into even quicker flashing, with nothing on my screen. Can anyone help please?