iH8tSn0w have recently sprung into iPhone hacking and announced on their twitter account that in the coming few days they are going to release f0recast – a simple way for the casual user to find out if their iDevice can be Unlocked or Jailbroken using the untethered hack. Just connect your iPhone, launch the app and push a button.
I would also like to remind everyone that there is NO jailbreak or unlock for the 3.1.3 firmware for the newer iDevice. 2G, 3G, and 3GS iPhones with the old bootROM can only be jailbreaked using the latest version of the PwnageTool from the Dev-Team.
Important: Forecast is only an informational tool which determines if your device can or cannot be jailbreaked. It will NOT jailbreak your device.