Chronic Dev GreenPois0n( GreenPois0n RC5 )
is sure to release for iOS 4.2.1 Untethered Jailbreak
. So we can download Greenpois0n RC5 to untethered jailbreak iOS 4.2.1 iPhone 4
, iPad & iPod Touch.
Here is the detailed tutorial for how to jailbreak iOS 4.2.1 with Greenpois0n RC5.
Wish this be helpful for you.
Note: Before jailbreak your iDevice, connect your iPhone, iPod touch or iPad to backup iPhone database. The method is very simple: Use the USB cable to connect the the iPhone with the computer, then open the available iTunes 10.1.1, right click the iPhone icon in the left, and then in the pop-up menu, select "Backup" to start.
(1) Download Greenpois0n RC5: http://www.greenpois0n.com/
(2) Download iTunes 10.1.1 for Windows / Mac OS X: http://www.coveringweb.com/2010/11/download-itunes-101-for-windows-and-mac.html
The detailed steps:
Step 1: Use the data cable to connect iPhone 4 and computer, and then power off the iPhone, then run Greenpois0n.exe in the PC;
Step 2: After open Greenpois0n, click "Prepare to Jailbreak (DFU)" button, ready to enter DFU mode.
Or: You can also enter DFU mode in advance manually:
(1) Hold down the "Power" button for 2 seconds;
(2) Keep holding down the "Power" button, press the "Home" key, Hold for 10 seconds;
(3) Release the "Power" button, continue to hold the "Home" key, and adhere to 15 seconds;
When the software detects correctly iPhone into DFU mode, The following screen will be, otherwise repeat the above steps to enter DFU mode;
Step 3: Click "Jailbreak!" Button; start jailbreak. Note: Do not disconnect when transfering jailbreak file;
Step 4: After file transfer and installation is completed, click "Quit" to exit the Greenpois0n program;
The process of Jailbreak has been completed, then we can find the icon "loader" in the iPhone to run.
Step 5: Click the"Cydia" icon;
Step 6: Click the "Install Cydia" button to install Cydia;
Note: When downloading cydia, do not let the screen dark, otherwise you have to download again. Or before enter the loader to download cydia, close the automatic screen lock.
Step 7: After Cydia installation is completed, the mission of "loader" is over, the program will prompt you whether to delete the loader program, if you need to delete, select "Remove".
Step 8: Then you can access Cydia to install the necessary patch. Tutorial:
(1) Use "Search" to find out and install "afc2add" ;
(2) After installation, reboot.
(3) Into Cydia, click on the "Manage > Sources > Edit > Add" to add the source. If to install the game, you must install the patch IPA, the official source address is "cydia.hackulo.us";
(4) Select "Add Anyway" to continue;
(5) After the installation, click the small triangle on the right of "Hackulo.us" into the source.
(6) Select "AppSync for OS 4.2.1, that is the 4.2.1 firmware ipa crack patch.; then Click "Install"; finally, click the "Confirm".
(7) After installation is complete, restart, you can use iTunes to install ipa format sync software.
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