Before unlocking your 3G running iPhone OS 3.0 please read the important note.

*Make sure you backup all your data before you start.

Step 1: You need the following software in order to do the unlocking.

    * jailbreak your iphone if you have not click here to read post

    * internet connection    

Step 2: Get a WIFI connection through Settings > WIFI

• Go to Cydia on your SpringBoard
  

• Open Cydia choose “User(Graphical Only)”
  

• Go back into Cydia and do a Upgrade Essential

• Then go into Cydia and select Manage
  and select Sources
  

   

  
  

   

  • select Edit
    

   

  
  

   

• Add
  

   

  
  

   

  • Enter the follow: http://repo666.ultrasn0w.com
    

   

  
  

   

  • Select Done
    

   

  
  

   

  • Go to
    Search and search for Ultrasn0w select Ultrasn0w
    

   

   

  
  

   

  • Install
    and then
    Confirm
    

   

  
  

   

  • Reboot Device
    

   

  
  

   

   

  Congratulation!!! You have unlock your iphone 3G with firmware 3.0 

  Please leave comment. Let me know if this post help.
   

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