Jailbroke using Redsn0w and iphone dosen't work now!

i downloaded redsn0w , followed video on youtube on how jail break iphone 3gs. when process complete turned on iphone , apple shows , phone shuts right off. attempted reset threw itunes itunes wont reconize iphone anymore! please!

 

put iphone dfu mode (google it) , restore through itunes. rejailbreak redsn0w.

 

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