Tutorial on how to UNLOCK iphone 3g using blacksnow   

These are instructions on how to jailbreak and unlock your iPhone 3G and 3Gs using BlackRa1n and BlackSnow for Mac.

These instructions will work with the latest 3.1.2 firmware, the 05.11.07 baseband, and iPhones which require hactivation. If you already jailbroken following these instructions will be easier.

For those with a new iPhone 3Gs, Blackra1n only supports a tetgered jailbreak. This means that once jailbroken you should not let your battery die. If it does die you will need to reconnect it to the computer and use Blackra1n to boot it.

Before continuing make sure you are on the 05.11.07 baseband by following this tutorial.
If you are not please update your firmwaree to 3.1.2 using iTunes before continuing.

STEP 1:
Open your web browser of choice and navigate to http://www.blackra1n.com
click the apple logo at the bottom of the screen.

STEP 2:
When prompted save the download to your desktop

STEP 3:
Then double click the downloaded blackra1n zip file to extract the application, then double click the application icon to launch the program.

STEP 4:
Make sure your iPhone or iPod is connected to the computer then click the large
"make it rain" button.

STEP 5:
Your iPhone will now be placed in recovery mode
You will see a picture of GeoHot that replaces the regular recovery mode screen on your device.

blackra1n will run and then your device will reboot.

STEP 6:
Once your device reboots it will be jailbroken and you will notice a blackra1n icon on the springboard. make sure you have an internet connection and press to launch the application.

Choose the installer application of your choice then press to select "snow" if you would like to unlock your device. Press the install button at the top right of the screen to begin.

Blackra1n will begin to download and install the packages you selected.

If you chose to unlock device using blacksnow you will be presented with a post install log for snow. CommCenter will be restarted and there is no need to reboot. If your carrier doesn't support 3G then disable it. Press the Close button to continue.

STEP 7:
Once completed Blackra1n will respring your iPhone and you will find the installer package of your choice on the springboard.

STEP 8:
Once you have confirmed your installer package is working correctly you may use the Uninstall blackra1n button inside the Blackra1n app to remove it from your springboard.

YOU CAN NOW USE ANY CARRIER IN YOUR COUNTRY