When you are going to do something like jailbreak or unlock sometimes your tool mentioned as supports particular basebands. This kind of situation suitable tool is “f0recast”. It shows..

                            Serial No

                            Baseband

                            Bootloader

                            Model

                           Jailbreakable

                           Unlockable

Before you are running this tool please connect your iDevice otherwise it will show message. You can download this tool for Windows and MAC platforms. f0recast developed by http://ih8sn0w.com/.

Download f0recast for Windows (V1.3)

Download f0recast for MAC (V1.3)