iphone 4s china 64gb 2pcs sim reg. failed done by tricks

1st move ko try ko sana rebuild yung emei nya sa GPG DRAGON kaso bigo ako
hanggang sa nakita ko ang secret code na ito...

procedure:

-put a simcard to phone
-power on the unit
-tapos type *#65010660#
-press call
-enter new imei
-then reboot
-DONE

screenshots: