Problem with iPhone after update?

I have a problem with my iPhone, its iPhone 3gs which was version 4.1 so i updated the to 5.1.1 and now all radio connections don't work(Bluetooth, Wi-Fi and reception) can i help me out? I was told by my friend there nothing i can do about it, please help

If I were you, then I would upgrade to iOS 6.1.1 because the only way you could have possible upgraded to 5.1.1 is if you downloaded an IPSW file from the internet, and it may be a bad file. Your iPhone should work afterwards.

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