If you have ever imperfectly jailbroken, and the jailbreak has been completed, you can click the 'quit' button to exit, and you will no longer have to worry about shutting down.
1. Download the Green Poison jailbreak software.
2. Prepare data cable and fully charged iphone4.
3. Unzip the jailbreak tutorial and run greenpois0n.exe.
4. Connect the iphone4 to the computer, then press the iphone4 switch button. When prompted, slide the screen to turn off the phone.
5. Then click the "prepare to jailbreak (dfu)" button in the middle of the greenpois0n program, and a countdown will appear.
6. You have 3 seconds to get ready. At this time, place your left hand on the iPhone 4 shutdown button and your right hand on the home button (the round button on the front), ready to stand by. Then follow the on-screen prompts and perform the following operations. Keep pressing the power button with your left hand for 2 seconds.
7. Keep pressing the power button with your left hand without releasing it. Press the home button with your right hand at the same time and keep this state for 10 seconds.
8. Release the power button on your left hand, and keep pressing the home button on your right hand for 15 seconds: (Note: This 15 seconds is the longest response time. In normal operation, it will be completed in 8 to 9 seconds. ).
9. If the above steps are performed correctly, you will enter write mode.
10. Press the "jailbreak!" button, the program will automatically perform the jailbreak operation, and the progress bar will scroll.
11. After a few seconds, there will be several lines of white English text scrolling on the screen background of your iphone4. Please wait patiently for it to end until the iphone4 automatically restarts and the white Apple icon appears.
12. If you have ever imperfectly jailbroken, and the jailbreak has been completed, you can click the "quit" button to exit, and you will no longer have to worry about shutting down.
13. Jailbreak completed.
14. Install the 4.x ipa crack patch in cydia.
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