blackra1n is the latest, simplest Jailbreak tool from iPhone hacker George Hotz (Geohot) and supports all modern iPhone and iPod touch devices running the latest 3.1.2 firmware. blacksn0w is the associated Unlock utility. (Jailbreaking lets you run software not approved by Apple, like background tasks, Google Voice apps, etc. Unlocking lets you use your iPhone on other carriers, like T-Mobile US or international carriers when traveling). blackra1n makes the process faster and easier than ever before.Note: For those of you who are planning on jailbreaking your new iPhone 3GS with the updated bootrom, you should be aware that BlackRa1n supports only a tethered jailbreak. This simply means if you have to reset your phone or your battery runs out on you, you will need to connect your device to your computer and run BlackRa1n to be able to boot your iPhone.

Lets Get Started:

Preparation
First things first, before we start please be sure you are currently on the 05.11.07 baseband. If you are not, connect to iTunes and update your software to 3.1.2. Once that is done it is time to begin. You will need to go to the BlackRa1n homepage, and click on the Apple to download the proper software. You will want to save the zip file to your desktop and then double-click on it. This will then create the BlackRa1n launch icon.
The Jailbreak Process
Connect your iPhone to your computer. Once connected double-click the BlackRa1n icon to begin the process.

Now simply click “make it rain”. Your device will now enter recovery mode.


Your device will now reboot.

Once your device reboots the jailbreak process is complete and you will see the following message on your desktop.

After you see this screen, enjoy the iPhone the way it should have been out the box. You will need to install either Rock or Cydia to download all the custom programs and themes. Also download Winterboard to organize and enable all of your downloads. Enjoy!!