Let me guess you just join here for cfw didn't you?

Read the rules of the forum and look to the stickies as well as search before you post useless threads.

There is no Jailbreak for any FW after 3.55 that is publicly released. There is a jailbreak in the works right now but there is no estimated time of completion, so don't ask.
If you understand this and still want to jailbreak you can downgrade your system by using either Progseek or E3 NOR Flasher(search). Once downgraded you can then Jailbreak.