guys visit this web and download 0.4.3 CLI.
can be use for windows user.
i free my ipad2 already xD
http://blog.iphone-dev.org/post/1616290593...ly-ready-to-pop

and follow this step.
1) Download the file above in step 3, then extract the folder to your Downloads. (Start Menu, your name, then on the left, downloads.)
2) There should now be a folder called: "cinject_0.4.3"
3) Open up CMD and type this (Without "" quotes..): "cd downloads"
4) Then, do: "cd cinject_0.4.3"
5) After so, type this command into cmd.. "cinject.exe -i payloads/jailbreak.mobileconfig"
6) On your device, click on install, and when prompted to type in a password, just click next, with no password in.
7) After so, type this command: "cinject.exe -j payloads"
8) Just wait a little bit. ( Don't freak out, or jizz )
9) Now after a few minutes from step 8, now type this command: "execute the command: cinject.exe -w"
10) On your device, after doing step 9, toggle the "VPN" switch on in the settings, in about a few seconds after, it should say error.
11) Wait, then it should restart. Cydia is now installed, and your device is now free!

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Added on January 21, 2012, 9:06 pmits easy bro.
free my device with no problem using the CLI
just follow the step by step
happy jb-ing!