Chronic Dev Team released this evening the new version of untethered jailbreak for iOS 4.2.1 called greenpois0n RC5. The version is only available for Windows as well as for Mac OS X. A jailbreak tutorial will be available soon, however there are some issues with jailbreaking on Mac so don't try it yet.
greenpois0n RC5 can be downloaded from here: [download id=”115″]
Although on the greenpois0n website there are links for all 3 versions of the program, only the one for Mac OS X is available for now!
You can find the jailbreak tutorial here.
Chronic Dev Team has also published a Read Me for the new version, you can read it below.
*** greenpois0n 1.0 RC5 ***
> Description of the software
greenpois0n will Jailbreak your iDevice.
> Supported iDevices:
- iPod Touch 2G (all bootroms)
- iPod Touch 3G
- iPod Touch 4G
- iPad 1G
- iPhone 3Gs (all bootroms)
- iPhone 4
- iPhone 4 Verizon (_not_tested_)
- AppleTV 2
> Requirements (check this!)
– a supported device (see above)
– the device should run iOS 4.2.1. Please check on the device in the Settings -> General -> About page.
If your device is running an older version, please upgrade iOS first using iTunes.
*** If you want to SIM Unlock, preserve your baseband using TinyUmbrella ¨***
– at least MacOSX 10.5
> Notes (checks this too!)
– this version of greenpois0n doesn't include a patched activation system. You'll need to activate your device using iTunes
- WE DO NOT SUPPORT PIRACY!
> Instructions
1. plug the device to your computer using the USB cable
2. Quit iTunes if it shows up
3. start greenpois0n.app
4. follow instructions
5. the device will boot a first time with verbose text on the screen. This operation will install the jailbreak on the device.
6. the device will reboot normally
7. start the Loader application (green icon on the SpringBoard), and follow instructions to install Cydia
