This is how to Jailbreak IOS 6 on your iPhone 3GS, iPhone 4, iPod 4th Generation, and the iPad 2.This is the new RedSn0w For the Tethered Jailbreak for IOS 6. This is a Developers Beta so do at your own risk and remember IT'S TETHERED so you will need the Program to turn the phone or device if it dies or you reboot it.
Step 1: Download the Proper RedSn0w for your Computer wether it be Mac or Windows i have both and extract the files.
Step 2: Download the IOS 6 for your specific device here are the links below
iPhone 5 GSM: http://appldnld.apple.com/iOS6/Restore/041-7169.20120919.5Mial/iPhone5,1_6.0_10A405_Restore.ipsw
iPhone 5 CDMA: http://appldnld.apple.com/iOS6/Restore/041-7171.20120919.doJ1e/iPhone5,2_6.0_10A405_Restore.ipsw
iPhone 4S: http://appldnld.apple.com/iOS6/Restore/041-7181.20120919.lEuOK/iPhone4,1_6.0_10A403_Restore.ipsw
iPhone 4 GSM: http://appldnld.apple.com/iOS6/Restore/041-7175.20120919.wvv7Y/iPhone3,1_6.0_10A403_Restore.ipsw
iPhone 4 CDMA: http://appldnld.apple.com/iOS6/Restore/041-7179.20120919.bDw4g/iPhone3,3_6.0_10A403_Restore.ipsw
iPhone 4 (3,2): http://appldnld.apple.com/iOS6/Restore/041-7177.20120919.xqoqs/iPhone3,2_6.0_10A403_Restore.ipsw
iPhone 3GS: http://appldnld.apple.com/iOS6/Restore/041-7173.20120919.sDDMh/iPhone2,1_6.0_10A403_Restore.ipsw
iPad 3 LTE GSM: http://appldnld.apple.com/iOS6/Restore/041-7161.20120919.5CyjO/iPad3,2_6.0_10A403_Restore.ipsw
iPad 3 LTE CDMA: http://appldnld.apple.com/iOS6/Restore/041-7163.20120919.19UEI/iPad3,3_6.0_10A403_Restore.ipsw
iPad 3 Wi-Fi: http://appldnld.apple.com/iOS6/Restore/041-3515.20120919.OYzOG/iPad3,1_6.0_10A403_Restore.ipsw
iPad 2 3G GSM: http://appldnld.apple.com/iOS6/Restore/041-7165.20120919.eZTyh/iPad2,2_6.0_10A403_Restore.ipsw
iPad 2 3G CDMA: http://appldnld.apple.com/iOS6/Restore/041-7167.20120919.y2ard/iPad2,3_6.0_10A403_Restore.ipsw
iPad 2 Wi-Fi: http://appldnld.apple.com/iOS6/Restore/041-0804.20120919.9SgHU/iPad2,1_6.0_10A403_Restore.ipsw
iPad 2 (2,4): http://appldnld.apple.com/iOS6/Restore/041-2187.20120919.vmGkW/iPad2,4_6.0_10A403_Restore.ipsw
iPod touch 4th gen: http://appldnld.apple.com/iOS6/Restore/041-0807.20120919.soT6X/iPod4,1_6.0_10A403_Restore.ipsw
iPod touch 5th gen: http://appldnld.apple.com/iOS6/Restore/041-3517.20120919.9ln3Q/iPod5,1_6.0_10A406_Restore.ipsw
Step 3: Open RedSn0w and click EXTRAS and hit SELECT IPSW and select the IOS 6 you've downloaded and click the ADD CYDIA icon and click next and let it load, then without exiting RedSn0w go back to the maine screen and Click JAILBREAK.
NOTE: NEED TO BE ON IOS 6 PRIOR
Step 4: Wait for the reboot and click on extras and click JUST BOOT and then just boot your device tethered
Windows: http://www.softwarereborn.com/uploads/3/5/5/2/3552885/redsn0w_win_0.9.15b1.zip
Mac: http://www.softwarereborn.com/uploads/3/5/5/2/3552885/redsn0w_mac_0.9.15b1.zip