What's new

How to Jailbreak Your iPhone 4 Using Greenpois0n (Mac) [4.2.1]

Gregoris

Administrator
Staff member
Joined
Jun 15, 2010
Messages
11,966
Reaction score
617
Location
United Kingdom
Step One
Open your web browser of choice and navigate to Greenpois0n.com. Click the Mac link at the bottom of the screen.

41850.png


Step Two
When prompted save the download to your desktop

47341.png


Step Three
Double click the downloaded greenpois0n-osx_rc5.zip file to extract the archive then double click greenpois0n from the desktop to launch the application

47342.png


Step Four
Connect your iPhone to the computer, power it off, then click the large Jailbreak button

41852.png


Step Five
You will now be instructed on how to place your iPhone into DFU mode. You can get help with this here.

You will be asked to press and hold the sleep button for 3 seconds.

41856.png


Continue holding sleep; press and hold home for 10 seconds.

41857.png


Release sleep button; Continue holding the home button. Do not release the Home button at this point!.

41858.png


Step Six
Once your iPhone is successfully in DFU mode the jailbreak will begin.

41853.png


Step Seven
Once Greenpois0n informs you that it has completed you can release the Home button. Click the Complete button to close the application.

41854.png


You'll notice some verbose mode text scrolling on your device.

Step Eight
After the iPhone restarts you'll notice a new Loader application on your Springboard. Press to launch it.

47348.png


Step Nine
Press to select Cydia then press the large Install Cydia button that appears.

47350.png
47351.png


Step Ten
Once Cydia has installed successfully you can remove Loader by pressing the Options button then the large red Remove Loader.app button.

47352.png
47354.png


Step Eleven
Restart your iPhone then run Cydia. Let it do all the necessary updates.

47353.png


***A big thanks goes everyone who made this jailbreak possible.
 
Top