Please Help iPhone not restoring

[muznybozz]

when i tried to restore my 3gs with 6.1.6 then itunes showin this error please help me out

 

[J. A.72]

First, try recovery mode to restore your device. Here are the instructions:
If you can t update or restore your iPhone iPad or iPod touch - Apple Support

If that's not possible either, a hardware failure could cause this error. Take it to the next Apple Store.