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How to jailbreak iOS 4.2.1 using greenpois0n

Greenpois0n is not for unlock tool it is only untethered jailbreak tool for jailbreak apple i Phone 3GS > apple iPhone 4 GSM > apple i Phone 4 CDMA > apple i Pod touch 2G > apple i Pod touch 3G > apple i Pod touch 4G > apple i Pad > apple i Pad 2 and apple i Phone 4S Greenpois0n is release in 2010 October to jailbroke iOS 4.1 Greenpois0n 2nd version release in 2011 February to jailbreak iOS 4.2.1 – jailbreak iOS 4.2.6 , Greenpois0n is develop by Chronic Dev and GreenPois0n supports only Untethered Jailbreaks .

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jailbreak iOS 4.2.1 using greenpois0n

 

Remember before GreenPois0n jailbreak RC1 > RC4 for 3.2.2 to 4.1 f.m versions and RC5 – RC6 only for the 4.2.1 > 4.2.6 f.m versions.The Latest one is GreenPois0n Jailbreak > iOS 4.2.1

Now you can jailbreak apple i Phone using GreenPois0n

apple i Phone 5 is did not Supported
apple i Phone 4S is did not Supported
apple i Phone 4 > jailbreak iOS 4 ( jailbreak iOS 4.2.6 to 4.2.1 and 4.1)
apple i Phone 3GS > jailbreak iOS 4 ( jailbreak iOS 4.2.1 and 4.1)
apple i Phone 3G > jailbreak iOS 4 ( jailbreak iOS 4.2.1 and 4.1)

Now you can jailbreak apple i pad using GreenPois0n

apple i Pad Mini is did not Supported
apple i Pad 4 > Not Supported
apple i Pad 3 > Not Supported
apple i Pad 2 > Not Supported
apple i Pad 1 >jailbreak iOS 4 ( jailbreak iOS 4.2.1) and jailbreak iOS 3 ( jailbreakiOS 3.2.2 )

Now you can jailbreak apple i Pod using GreenPois0n

apple i Pod Touch 5G > Not Supported
apple i Pod Touch 4G > jailbreak iOS 4 ( jailbreak iOS 4.2.1 and 4.1)
apple i Pod Touch 3G > jailbreak iOS 4 ( jailbreak iOS 4.2.1 and 4.1)
apple i Pod Touch 2G > jailbreak iOS 4 ( jailbreak iOS 4.2.1 and 4.1)

GreenPois0n Apple TV Support

Apple TV 2G > jailbreak iOS 4 (4.2.1 and 4.1.1)

How to jailbreak iOS 4.2.1 your apple i devios untethered via greenpois0n

step : 01  First you nee to Download Greenpois0n for Windows 7 / win 8 or mac

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Download Greenpois0n for Windows


step : 02  Then Download Greenpois0n iOS 4.2.1

  • Download Greenpois0n  Mac OS X
    • mac_rc6_1.zip
    • mac_rc6_1.zip
  • Download Greenpois0n Windows
    •  win_rc6.1.zip
    •  win_rc6.1.zip

step : 03 Before Greenpois0n jaikbreak iOS 4.2.1 Backup your data using i Tunes

step : 04  Next Extract the Greenpois0n and zip file to new folder then run Greenpois0n run as administrate

step : 05  And next you can Click Jailbreak icon

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Click Jailbreak icon

step : 06  Follow the instructions to put your apple i devise in DFU mode

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Follow the instructions to put your apple i devise in DFU mode

step : 07  Greenpois0n jailbreak your apple i devise iOS 4.2.1 as soon as it enters DFU mode

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Greenpois0n jailbreak your apple i devise iOS 4.2.1 as soon as it enters DFU mode

step : 08  Click on Complete button process & numerous commands to running in your apple i devious

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Click on Complete button process & numerous commands to running in your apple i devious

step : 09  Jailbroken using Greenpois0n is now completed . then you can install Cydia . and used new applications

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install Cydia . and used new applications