Two weeks ago, Geohot released his blackra1n iPhone 3.1.2 jailbreak. The blackra1n jailbreak software worked with all iPhones and iPod touches running on iPhone 3.1.2 firmware except for the newer 8GB iPod touch (MC models) that Apple released after the September 9 event. The blackra1n jailbreak also did not work on the newer iPhone 3GS which Apple patched the 24kpwn exploit in. blackra1n RC2 works with all iPhone and iPod touches, but the newer iPod touch and iPhone are only tethered jailbreaks. Tethered means that you will need to run blackra1n each time you reboot your iPhone or iPod touch.  If you were an iPhone 3G user, you most likely had to try many different methods to get blackra1n to work. Geohot has fixed the iPhone 3G problem so blackra1n should now jailbreak without any problem.

If you already did jailbreak your iPhone or iPod touch, you don’t need to use blackra1n again.

Jailbreak iPhone 3.1.2 with blackra1n RC2

Here is how you can jailbreak iPhone 3.1.2 firmware using blackra1n RC2.

1. Download blackra1n RC2 (Available for both Windows & Mac)

2. Follow the steps at my jailbreak iPhone 3.1.2 post.

blackra1n on Windows 7

I tried blackra1n on Windows 7, but it crashed when I first tried opening it. To get blackra1n to work on Windows 7, do the following:

1. Right-click the blackra1n icon and click properties.

2. Click the Compatibility tab.

3. Under compatibility mode click the box to enable it and select Windows XP (Service Pack 2). Click OK, and then run blackra1n.

I’ve only tried this on a Windows 7 32-bit setup, but it should work on a 64-bit setup as well.