Could someone please help, I'm having trouble updating to jelly bean. The notification keeps popping up, but it fails every time I try to do it over the air. When I plug into my computer, PC Companion tells me the update is available, but I can't get step 3 to work, the one that says to power off the phone, wait 5 seconds, then plug the USB back in while holding the volume down button. The phone just starts charging and my PC doesn't recognize it because it is off. This is very frustrating, has anyone else had this problem? Any help would be greatly appreciated, thanks