IOS 5 downgrade help!

I recently downloaded iOS 5 to my iPhone 4 and during the activation process it started acting up so i tried to turn it off. i turned it back on and retired to activate it using 4 different guides, none of which worked. I then decided to resort my iPhone...... that didn't turn out as planned. when i hit restore, i was stuck at the verifying iPhone restore loading bar in iTunes for like 20 minutes. i quit out and tried again only to encounter the same problem. Now my iPhone only displays the usb cable with an arrowing pointing towards the iTunes logo... I tried using redsn0w and 4.3.3 but it doesn't work and tiny umbrella didn't work either. I'm lost and i really need to get this figured out! please help me!