I have iPhone 4S locked to UK O2, I have restored it to iOS 6.0.1 with 3.0.04 baseband (modem firmware). And I want to make IMEI factory unlock for my iPhone 4S UK O2
  
  My friends told me that there are many scammers on the internet, so how can I unlock my iPhone 4S with trusted source?
  
  Thanks
  >>> Unlock iPhone 4S UK O2 6.0.1 baseband 3.0.04?