iPhone 4 Full battery Tried updating to 4.3.4 and failed Said phone was in Restore mode. Went to restore and update. Error. Again, second Error. Again, a third different error. Troubleshooting said to reboot my computer. I did and my phone is completely off. Will not power on. Not by pressing power and home buttons together. Not by pressing the power button for at least 10 seconds. Not by plugging into charger. Not by restarting the computer with the phone tethered. There is absolutely nothing on the screen. No apple. Just completely dark as if powered off. It's my only phone. I cannot call the Apple store to make an appointment. Someone, please advise - truly in a panic here!