How to Jailbreak Your iPhone 3GS, iPhone 4 Using Greenpois0n (Windows)
These are instructions on how to jailbreak your iPhone 3GS and iPhone 4 using Greenpois0n for Windows. Greenpois0n supports the iOS 4.1 and iOS 4.2.1 [You must be registered and logged in to see this link.]. Use[You must be registered and logged in to see this link.] if you want to jailbreak iOS 4.0, iOS 4.0.1, iOS 4.0.2.
Remember: Do not update to iOS 4.2.1 if you need the unlock. Ultrasn0w does not support
that baseband yet. The only exception is the iPhone 4. You can
update to iOS 4.2.1 without upgrading your baseband by following [You must be registered and logged in to see this link.] tutorial.
Step One
Open your web browser of choice and navigate to [You must be registered and logged in to see this link.]. Click the Windows link at the bottom of the screen.
[You must be registered and logged in to see this link.]
Step Two
When prompted save the download to your desktop
[You must be registered and logged in to see this link.]
Step Three
Double click the downloaded gp_win_rc5_b2.zip file then drag the greenpois0n.exe file to the desktop. Double greenpois0n.exe from the desktop to launch the application
[You must be registered and logged in to see this link.]
Step Four
Power off your iPhone then click the large Prepare to Jailbreak (DFU) button
[You must be registered and logged in to see this link.]
Step Five
You will now be instructed on how to place your iPhone into DFU mode. You can get help with this [You must be registered and logged in to see this link.].
[You must be registered and logged in to see this link.]
You will be asked to press and hold the sleep button for 2 seconds.
[You must be registered and logged in to see this link.]
Continue holding sleep; press and hold home for 10 seconds.
[You must be registered and logged in to see this link.]
Release sleep button; continue holding home for 15 seconds.
[You must be registered and logged in to see this link.]
Step Six
Once your iPhone is successfully in DFU mode you may click the Jailbreak button.
[You must be registered and logged in to see this link.]
Step Seven
Greenpois0n will now jailbreak your device
[You must be registered and logged in to see this link.]
Step Eight
Click the Quit button once the software application has completed.
[You must be registered and logged in to see this link.]
You'll notice some verbose mode text scrolling on your device.
Step Nine
After the iPhone restarts you'll notice a new Loader application on your Springboard. Press to launch it.
[You must be registered and logged in to see this link.]
Step Ten
Press to select Cydia then press the large Install Cydia button that appears.
[You must be registered and logged in to see this link.]
Step Eleven
Once Cydia has installed successfully you can remove Loader by pressing
the Options button then the large red Remove Loader.app button.
[You must be registered and logged in to see this link.]
Step Twelve
Restart your iPhone then run Cydia. Let it do all the necessary updates then follow our [You must be registered and logged in to see this link.] tutorial if possible for your device.
[You must be registered and logged in to see this link.]
***A big thanks goes everyone who made this jailbreak possible.
These are instructions on how to jailbreak your iPhone 3GS and iPhone 4 using Greenpois0n for Windows. Greenpois0n supports the iOS 4.1 and iOS 4.2.1 [You must be registered and logged in to see this link.]. Use[You must be registered and logged in to see this link.] if you want to jailbreak iOS 4.0, iOS 4.0.1, iOS 4.0.2.
Remember: Do not update to iOS 4.2.1 if you need the unlock. Ultrasn0w does not support
that baseband yet. The only exception is the iPhone 4. You can
update to iOS 4.2.1 without upgrading your baseband by following [You must be registered and logged in to see this link.] tutorial.
Step One
Open your web browser of choice and navigate to [You must be registered and logged in to see this link.]. Click the Windows link at the bottom of the screen.
[You must be registered and logged in to see this link.]
Step Two
When prompted save the download to your desktop
[You must be registered and logged in to see this link.]
Step Three
Double click the downloaded gp_win_rc5_b2.zip file then drag the greenpois0n.exe file to the desktop. Double greenpois0n.exe from the desktop to launch the application
[You must be registered and logged in to see this link.]
Step Four
Power off your iPhone then click the large Prepare to Jailbreak (DFU) button
[You must be registered and logged in to see this link.]
Step Five
You will now be instructed on how to place your iPhone into DFU mode. You can get help with this [You must be registered and logged in to see this link.].
[You must be registered and logged in to see this link.]
You will be asked to press and hold the sleep button for 2 seconds.
[You must be registered and logged in to see this link.]
Continue holding sleep; press and hold home for 10 seconds.
[You must be registered and logged in to see this link.]
Release sleep button; continue holding home for 15 seconds.
[You must be registered and logged in to see this link.]
Step Six
Once your iPhone is successfully in DFU mode you may click the Jailbreak button.
[You must be registered and logged in to see this link.]
Step Seven
Greenpois0n will now jailbreak your device
[You must be registered and logged in to see this link.]
Step Eight
Click the Quit button once the software application has completed.
[You must be registered and logged in to see this link.]
You'll notice some verbose mode text scrolling on your device.
Step Nine
After the iPhone restarts you'll notice a new Loader application on your Springboard. Press to launch it.
[You must be registered and logged in to see this link.]
Step Ten
Press to select Cydia then press the large Install Cydia button that appears.
[You must be registered and logged in to see this link.]
Step Eleven
Once Cydia has installed successfully you can remove Loader by pressing
the Options button then the large red Remove Loader.app button.
[You must be registered and logged in to see this link.]
Step Twelve
Restart your iPhone then run Cydia. Let it do all the necessary updates then follow our [You must be registered and logged in to see this link.] tutorial if possible for your device.
[You must be registered and logged in to see this link.]
***A big thanks goes everyone who made this jailbreak possible.