The guide below works to perform a tethered jailbreak of iOS 6.0 and iOS 6.0.1 with Sn0wBreeze 2.9.7. The latest Sn0wBreeze is compatible with A4-devices including iPhone 4, iPhone 3GS, iPod Touch 4G but it does not work for A5 and A6 devices like iPhone 4S, iPad 2, iPad 3, and iPhone 5.
Jailbreak iOS 6 and iOS 6.0.1 with Sn0wBreeze 2.9.7
Unzip Sn0wBreeze 2.9.7 and run its exe file as administrator
Now click “Ok” > “Next” buttons to continue on Sn0wBreeze
Browse for downloaded iOS file from your desktop and let it verify and then click on “Next” button
Select “Simple Mode” from the available options, and let it complete the process to create custom IPSW file which will be saved on desktop
Now put your iDevice into Pwned DFU mode by using iREB option which is available in Sn0wbreeze’s File Menu status bar
When your iDevice get entered into Pwned DFU mode just close Sn0wbreeze and open iTunes
In iTunes window select your attached iDevice under Devices in left panel, and then Press and Hold “SHIFT” key and click on “Restore” button in iTunes and navigate to custom IPSW firmware file and let iTunes to complete restore process
When restore process will complete, you will have jailbroken iOS 6/6.0.1 on your iDevice.
You will find a folder named “iBooty” on your desktop that is created by Sn0wbreeze, select your iDevice from available device list, to which you want to boot into tethered mode and click “Start” button on iBooty screen
To enter into Pwned DFU mode just follow on screen instructions given by iBooty, and on successful process completion, iBooty will automatically boot your iDevice into tethered jailbreak mode
Now, you access Cydia and can install your required Cydia apps on your jailbroken iOS 6/6.0.1 iDevice.