Few weeks ago suddenly the power button stopped working, I tried to restore but nothing happend.
Then I asked a friend, who was going to NY, to bring it to an Apple Store: Bam it worked again just connecting the iphone to a Mac and he did not remember what the Geniud did.
Right now i tried to unlock the iphone and the power button is still out of order, even after several restore...
The problem is also that i cannot enter the DFU mode so I cannot donwgrade lower than 2.0, even using iLiberty or Ziphone because the iphone enter the recovery mode but nothing more.

Please help me
Thanks
Alessandro