Hi free unlock codes some times won't work. So better you can go for paid unlocking service. I would suggest this site Simpleunlocking.com here you can get the unlock code and unlock your motorola atrix hd mobile. To get the code you have to mention which country is locked now,network provider and imei number. Then they send unlock code through email. Using the free mobile unlocking instructions from this site Mobileunlockguide.com