just jailbroke with windows too using cmd. I'm not good with cmd so anyone can do it.
so this is for iphone 4s or ipad 2 on version 5.0.1
first download
this and extract to a desktop in a folder.
then download
this. also install this to desktop.
Follow these steps here:
1) Connect your iPad/iPhone into your PC and make sure you take off any kind of password lock or sleep timer.
2) Click inside the /payloads folder of the cinject_0.4.3.zip file you downloaded and double click the jailbreak.mobileconfig file to import it into iphone config utility
3) the program will open on your desktop, and you should see the name of your iPhone/iPad listed in lower left hand corner, click it
4) Then click on 'configuration profiles' tab and hit the install button on jailbreak.
5) Look on your phone. Hit the install button and follow the steps. When it asks for a password, just ignore it and hit next.
6) On your PC, hit start menu, in search box type (without quotes) "cmd". Then dos window will open up. Now (again, never use quotes) type "cd desktop" then hit enter. then type "cd cinject_0.4.3". (note that this was the zip file name, if you renamed the folder, you need to type in whatever you named it as)
( If you did this step right, you won't get an error message and your line should say C:\Users\nameofpc\Desktop\cinject_0.4.3> )
7) make sure your iphone/pad is at the home screen then type "cinject.exe -i payloads/jailbreak.mobileconfig" and hit enter
8) Look at your phone to make sure it's installed. If not, just do it again.
9) On your PC, back on your cmd window, type "cinject.exe -j payloads" and hit enter. some text should scroll and after a bit it should backup, restore, and give you a message about pod2g and tells you to type in...
10) "cinject.exe -w" so do that, and hit enter. now your cmd screen is going to go haywire and tell you a bunch of error messages and spam and timeouts, just ignore it. look on your device, and go back to your settings screen. look for the "VPN" option right under WiFI (it's not normally there) and tap it. Now just wait. You will get an error on your phone, this is normal. Don't touch anything and let it crash. Your device will reboot and eventually when it starts back up it will have Cydia. It might look like it's freezing but just have a little patience and it will boot up.
Enjoy