IPhone 4 is completely jailbroken and requires the latest RedSn0w jailbreak tool. During the upgrade, the baseband may be upgraded. Therefore, you must retain the baseband when there is a lock and use the self-made firmware to upgrade the jailbreak.
First, download the firmware of iOS5.0.1 and the RedSn0w 0.9.10b3 jailbreak tool. (If your device is already iOS5.0.1, you do not need to download the firmware ).
RedSn0w 0.9.10b3
ITunes10.5.2
IOS5.0.1 firmware
Note: During the jailbreak process, Redsn0w cannot be automatically detected after the device is restarted (stuck in the Waiting for reboot step). Refer to this tutorial for jailbreak:"Waiting for reboot" solution for iOS 5.0.1 jailbreak
For details about how to jailbreak other devices, see:
IPhone Chinese web cracking jailbreak topic view latest jailbreak cracking Information
Connect the iPhone to your computer, open iTunes, press Shift and click "Restore". In the pop-up menu, select the downloaded iOS5.0.1 firmware and upgrade the device to iOS5.0.1 (before this, back up personal data. If the device already has the iOS5.0.1 firmware, skip this step ).
Open RedSn0w (for users like Win7, right-click and select "Run as administrator"), and click "Jailbreak.
Connect the iPhone 4 to your computer and press and hold down the lock key until the shutdown button is displayed.
In RedSn0w, click Next and press the RedSn0w prompt to guide iPhone 4 to DFU mode. Press "Home" and "Lock key 10 seconds" at the same time to release the lock key, and hold down the Home key, until the RedSn0w detects the device.
RedSn0w restarts the machine and automatically performs jailbreak. wait patiently for it to complete.
Select the "Install Cydia" option. Leave the other three options blank and click "Next. RedSn0w will install the Cydia store and complete the perfect jailbreak. After the progress bar is finished, the device will restart again.
OK, you now have a perfect IOS 5.0.1 jailbreak iPhone 4.
After jailbreak, another important task is to install the ipa patch AppSync 5.0 + on CYIDIA and continue on the next page.
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After jailbreak, an important task is to install the ipa patch AppSync 5.0 + on CYIDIA.
Enter the Cydia program for the first time
Select "user" and click "finish" in the upper right corner"
Select the "manage" menu at the bottom of the interface, and select the "software source" menu
Click the edit button in the upper-right corner.
Click "add" in the upper left corner.
Enter the http://cydia.hackulo.us address and click Add source to wait for loading
After the address is verified, the "software source warning" appears and select "still add ".
When downloading the source file and list, you may be prompted to ignore errors until they are completed. It is best not to let the screen black out.
Once added, click the "back to Cydia" button at the bottom.
Go back to the previous page and you will see that the cydia. hackulo. us source has been added. Click to enter
If you do not see the list above, it indicates that some files have not been downloaded. You need to refresh the source list on the change page. Please click it several times, if the source is refreshed for multiple times but it does not work, delete the added source and add it again. Sometimes there are many network problems or users.
Here we choose to install the ipa patch AppSync 5.0 + and click "Install" in the upper right corner ".
Click "OK" in the upper right corner to install the file.
After the installation is complete, click "restart SpringBoard" to return to the device homepage. If the page is not displayed normally, restart the machine to restore the device to normal, now you can install the ipa software game and other applications downloaded from the Internet.
More about jailbreak
"Waiting for reboot" solution for iOS 5.0.1 jailbreak
Temporary solution for iBooks crash after iOS 5.0.1 is jailbroken
Install the AppSync patch for iOS 5/iOS 5.0.1 after jailbreak.
Http://iphone.tgbus.com/tutorial/hacktutorial/201112/20111229163638.shtml