The redsn0w 0.9.10b1 of iOS 5.0.1 can be released perfectly. Currently, it supports iPhone 3GS, iPhone 4, iPhone 4 CDMA, iPad 1, iPod touch 3G, and iPod touch 4G. However, iPhone 4 S and iPad 2 with A5 processors still cannot be jailbroken. Check settings on the device-> General-> about the local machine to check the firmware version of the device. If your device runs the old version of the firmware, you can upgrade to 5.0.1 before jailbreak.
1. Download redsn0w_win_0.9.10b1,unpack the attachment and open redsn0w.exe.
2. Click Jaibreak in the figure.
3. Make sure that your iOS device is shut down and the data cable is connected to your computer.
4. During the jailbreak process, you must first enter the DFU mode. There are three steps in the specific operation process. First, press and hold the key for several seconds. Then the system prompts that the field will become grayed out ,,
Go to the next step.
5. Then, open the key and press the HOME Key for about 10 seconds.
6. Finally, open the key and press the home Key for 15 seconds.
7. Some progress bars will appear after the operation is successful.
8. Select "Install Cydia" when the page appears, and start to Install Cydia to iOS devices.
9. Wait a moment. The screen is refreshed in English on the iOS device, and a file is being uploaded.
10. Two or three minutes later, the phone will be restarted and the Cydia icon will be displayed.
Finally, I would like to say that, although jailbreak will bring some functions that are not available on your iOS device, it may also cause problems such as system instability and power consumption increase. Please choose one based on your needs.
From kwang.cn