Its tested by me 100% work!!!
No need 2 install i world.
Just Update 1.1.2>>>>>1.1.3 version using itunes.
http://photos1.hi5.com/0020/042/105/9Uk5Fc042105-02.jpg
after unlock use ZiPhoneGUI 3.1.
http://www.p2pgsm.com/images/button-download-file.gif
user:098765
pass:098765
options select..........
() jailbreak,
() active and
() unlock.
http://photos1.hi5.com/0021/528/721/tN8h1p528721-02.jpg
click free my phone.