Apple iPhone 3GS stopped working

[haddad]

So my stupid brother installs some crap called SAMPrefs and SAM on my iphone 3gs, and so I remove it via cydia since its not doing anything, and after that I see this stupid picture with usb cable and put to itunes

so I do that, and it says I cant activate through itunes, my sim cart is "not supported"

so I turned on redsn0w and usied cfw iphone 3gs 4.3.3 (what I was on), and I checked Install Cydia, and "Deactivate" and went through all this, and my iphone is stull stuck on that usb cable and itunes logo image

help lol

 

[Tom]

u on windows or a mac? If ur on windows google recboot,once you get it run and click exit recovery mode,for mac google last dfu and run and hit exit dfu(phone must be connected to ur comp obviously for both)that should work