Apple ipod

How do you unlock the iPhone if it were to upgrade, then froze?

I took the iPhone off the charger when it was updating computer. On the screen, which has apple and a loading bar, but the loading bar does not load. I take it off the charger, it said that the team was completely the update. But now, the iPhone does not work all. What I can do to fix this problem?

First press the Home button and Sleep / activated all at once to make a change of the house was a second key of the first semester

How to RESTORE iPhone / iPod Touch. FIX FREEZING AND ERRORS!