unlocking samsung galaxy s3 gt-i9305
Hi, I have a samsung galaxy s3 gt-i9305 which is locked on Orange United Kingdom. Can someone help me to unlock it for free. I don.'t want to pay for something that can be done for free. I am on rooted jelly bean 4.1.2. Another thing voodoo galaxy s3 sim unlock and all free unlocking app on android market doesn't work and also these instructions doesn't work cause the last option is not available.
Put a different SIM to your own into the handset and then turn off the handset and switch it back on with that SIM inside.
Go to the dial pad on your phone and then type in *#197328640#.
Head over to the Main Menu of the device >  UMTS >  Debug Screen >  Phone Control >  Network Lock > Options Perso SHA256 OFF > and wait for around 30 seconds.
You should then head to Menu and choose Back, where you will come across the Network Lock. Choose  NW Lock NV Data INITIALLIZ.
Can someone help me please.