Saturday, March 26, 2011

How to Jailbreak iOS4.2.1 with greenpois0n 1.0 RC6.1

*** greenpois0n 1.0 RC6.1 ***

> 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
  - Apple TV 2

> Changelog:

  - RC6.1: comex 'hunnypot' iBooks fix, don't overwrite animate if it already exist
  - RC6: Apple TV 2 support, fixed emulators compatibility issues with greenpois0n
  - RC5.4: Verizon iPhone 4 is now supported !

> Requirements (check this !)

  - a supported device (see above)
  - the device should run iOS 4.2.1 (4.2.6 for iPhone 4 Verizon). 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 (iPhone 4 only) or PwnageTool ***
  - at least Windows XP
  - a working internet connection

> Notes (checks this also !)

  - if your device is jailbroken with iPhone Dev Team's Monte, please restore the device using iTunes first.
  - if Cydia doesn't show up after Loader, you may need to reboot the device
  - 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 1st time with verbose text on 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

> In case of troubles

  1. check if somebody had the same issue : http://jailbreakqa.com/
  2. join us on IRC : irc.chronic-dev.org #greenpois0n

> Source code

  greenpois0n public source repositories will be updated soon

> Credits (alphabetical order)

  Chronic-Dev Team (follow us on twitter):
  - AriX        : @AriX
  - |bile|      : @nitoTV
  - chronic     : @chronic
  - DHowett     : @DHowett
  - jan0        : @0naj
  - Jaywalker   : @Jaywalker9988
  - OPK         : @iOPK
  - pod2g       : @pod2g
  - posixninja  : @p0sixninja
  - semaphore   : @notcom
  - westbaer    : @westbaer

  Contributions: chpwn, comex, geohot

  People who helped (thank you!): GreySyntax, iH8sn0w, LunchBox, pod3g, ven000m, zodttd

> Donations:

  Donations are always greatly appreciated and will permit to buy new devices to make tests for future jailbreaks. ( http://www.greenpois0n.com )

These are instructions on how to jailbreak your iPhone 3GS and iPhone 4 using Greenpois0n for Windows. Greenpois0n supports the iOS 4.1 and iOS 4.2.1 firmware. Use Limera1n if you want to jailbreak iOS 4.0, iOS 4.0.1, iOS 4.0.2.

Remember: Do not update to iOS 4.2.1 if you need the unlock. Ultrasn0w does not support that baseband yet. The only exception is the iPhone 4.
Step One
Open your web browser of choice and navigate to http://www.greenpois0n.com. Click the Windowslink at the bottom of the screen.


Step Two
When prompted save the download to your desktop


Step Three
Double click the downloaded gp_win_rc5_b2.zip file then drag the greenpois0n.exe file to the desktop. Double greenpois0n.exe from the desktop to launch the application




Step Four
Power off your iPhone then click the large Prepare to Jailbreak (DFU) button


Step Five
You will now be instructed on how to place your iPhone into DFU mode.


You will be asked to 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 Six
Once your iPhone is successfully in DFU mode you may click the Jailbreak button.


Step Seven
Greenpois0n will now jailbreak your device


Step Eight
Click the Quit button once the software application has completed.


You'll notice some verbose mode text scrolling on your device.

Step Nine
After the iPhone restarts you'll notice a new Loader application on your Springboard. Press to launch it.


Step Ten
Press to select Cydia then press the large Install Cydia button that appears.


Step Eleven
Once Cydia has installed successfully you can remove Loader by pressing the Options button then the large red Remove Loader.app button.


Step Twelve
Restart your iPhone then run Cydia. Let it do all the necessary updates then follow our Unlock tutorial if possible for your device.


***A big thanks goes everyone who made this jailbreak possible.