Ureyesonly
06-02-2011, 12:34 PM
NOTE: If your iPhone 4 rely on an unlock, do not update to iOS 4.2.1 yet as doing so will upgrade your baseband, making it impossible for now to unlock.
Step 1: Download GreenPois0n from the link given below.
Step 2: Connect your iPhone via USB to your computer and click on ?Jailbreak? as seen in the screenshot below.
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Step 3: Now follow the following onscreen instructions to enter DFU mode:
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Press and hold the sleep button for 2 seconds
* Continue holding sleep; press and hold home for 10 seconds.
* Release sleep button; continue holding home for 15 seconds.
Step 4: GreenPois0n will now start ?Jailbreaking? your iOS device untethered on 4.2.1.
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Step 5: Your iPhone, iPad or iPod touch should now be successfully jailbroken on iOS 4.2.1. Now start ?Loader? found on the homescreen and install Cydia.
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. This is it! You are done !
UPDATE 1: Our complete step by step video guide is up!
YouTube - HowTo Jailbreak iOS 4.2.1 (Unthered) without SHSH blobs w/ GreenPois0n RC5 (iPhone/iPod touch/iPad) (To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. UPDATE 2: GreenPois0n RC5_2 is up! Brings various bug fixes, including: GreenPois0n Initialized error.
UPDATE 3: If you are already using a tethered iOS 4.2.1 jailbreak using Redsn0w 0.9.6, just run GreenPois0n over it to untether iOS 4.2.1 jailbreak.
UPDATE 4: Windows version of GreenPois0n is now available for download.
Download GreenPois0n for Windows [Mirror (http://mirrors.ih8sn0w.com/gp_win_rc5_b2.zip)]
Download GreenPois0n [Mac OS X Mirror (http://mirrors.ih8sn0w.com/greenpois0n-osx_rc5_2.zip)]
Download (To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. iOS 4.2.1 for iPhone 4, 3GS, iPod touch 4G / 3G / 2G and iPad
Step 1: Download GreenPois0n from the link given below.
Step 2: Connect your iPhone via USB to your computer and click on ?Jailbreak? as seen in the screenshot below.
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Step 3: Now follow the following onscreen instructions to enter DFU mode:
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Press and hold the sleep button for 2 seconds
* Continue holding sleep; press and hold home for 10 seconds.
* Release sleep button; continue holding home for 15 seconds.
Step 4: GreenPois0n will now start ?Jailbreaking? your iOS device untethered on 4.2.1.
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. Step 5: Your iPhone, iPad or iPod touch should now be successfully jailbroken on iOS 4.2.1. Now start ?Loader? found on the homescreen and install Cydia.
To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. This is it! You are done !
UPDATE 1: Our complete step by step video guide is up!
YouTube - HowTo Jailbreak iOS 4.2.1 (Unthered) without SHSH blobs w/ GreenPois0n RC5 (iPhone/iPod touch/iPad) (To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. UPDATE 2: GreenPois0n RC5_2 is up! Brings various bug fixes, including: GreenPois0n Initialized error.
UPDATE 3: If you are already using a tethered iOS 4.2.1 jailbreak using Redsn0w 0.9.6, just run GreenPois0n over it to untether iOS 4.2.1 jailbreak.
UPDATE 4: Windows version of GreenPois0n is now available for download.
Download GreenPois0n for Windows [Mirror (http://mirrors.ih8sn0w.com/gp_win_rc5_b2.zip)]
Download GreenPois0n [Mac OS X Mirror (http://mirrors.ih8sn0w.com/greenpois0n-osx_rc5_2.zip)]
Download (To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts. iOS 4.2.1 for iPhone 4, 3GS, iPod touch 4G / 3G / 2G and iPad