how to open pin code & pattern lock sc7730/31+emmc volcano inferno

tutorial"

step 1: if u have volcano box.
step 2: open it spd inferno tool
step 3: after select format option
step 4: select correct chip number
step 5: after click correct chip number then show 2 option.
step 6: select android version  and click next
step 7: connect usb in 20 second
all done.