In this post you will learn how to unlock your iPhone 3G or iPhone 3GS with blacksn0w on iOS 3.1.2 or newer versions. There are few ways you can do that. For instance, if you accidentally updated to baseband 05.11.07 you can unlock with blacksn0w. The tutorial will work fine both on Mac and PC. Before starting using this tutorial we will assume that your device is on iOS 3.1.2, it's locked and jailbroken. To check your iPhone 3GS bootrom version use this tutorial. Step One: Once your phone is restored download go to blackra1n.com and download the unlocking solution for your operating system (Windows and Mac logos at the bottom of the screen). Step Two: Plug your iPhone to your computer. Step Three: Run blackra1n and close iTunes. Step Four: Within the jailbreak app press 'make it ra1n' button. Step Five: The iGadget will enter recovery mode and you see a nice GeoHot's picture instead of usual recovery image. Step Six: Blackra1n will now run and reboot your device once done. Step Seven: After the reboot you'll see a blackra1n icon on your SpringBoard. Make sure that you have active internet connection and launch the app. Step Eight: You will see three options available for install:

• Cydia
• Rock
• sn0w

Cydia and Rock are the jailbreak app stores so you can choose either Cydia or both of them. Be also sure to install sn0w as this is the unlock for your phone. Step Nine: The iPhone will respring and you should see Cydia (and Rock) icons on your SpringBoard. One it's done you can remove blackra1n from your device. It won't remove neither jailbreak nor unlock but only the blackra1n.app itself. Step Ten: After uninstalling blackra1n reboot your iPhone. That's it, now you will be able to run Cydia and see the full signal bar along with your carrier's name. If it happened that you're on 3.1.2 but don't have your blackra1n app no more - there's a way out. You can install blackra1n app from Cydia. Just go to Cydia->Sources->Edit and add blackra1n.com. After that enter the blackra1n repo and install the app. That's how you can unlock iPhone 3G or 3GS with blacksn0w on firmware 3.1.2. That is one of the easiest methods to unlock and jailbreak the iPhone among existing. It can only compete with JailbreakMe tool that requires only visiting the site for performing the jailbreak. Found the post useful - like and share it among your friends and don't forget to comment.