As before, utility is only compatible with OS X (Mac), but the ranks have thinned mobile devices: in the ranks was only iPhone 3G. The situation with the iPhone 3GS and iPod Touch 3G is such that vulnerability, which used the program Spirit, has been fixed in the latest beta, which, in principle, it was quite predictable. It will be recalled that even before the Spirit was stated that apart from this decision there are other well-known course in firmware 3.1.3, which has not yet been shown. Even if Spirit will not be able to tie for the fourth firmware is still hope for a plan "B".
Note : We don’t recommend to jailbreak beta version of iPhone.