Ultrasn0w from the iPhone dev-team has gone live. All those who’ve been waiting for a software carrier unlock for iPhone 3.0 can now safely upgrade.

From the iPhone Dev-Team blog, all you need to do is:

• Upgrade to 3.0 in iTunes
• Jailbreak your iPhone 3G using PwnageTool or redsnow
• Fire up Cydia or Icy
• Add the repository: repo666.ultrasn0w.com to Cydia or Icy
• Search for Ultrasn0w and install
• Reboot your iPhone 3G and you’re unlocked!

The iPhone dev team does however warn that if you’re on T-Mobile USA that you should diable 3G before using ultrasnow. So what are you waiting for? Break free from the constraints of AT&T/O2 and still get the 3.0 goodies. Visit the iPhone Dev-Team for more information.