How To Jailbreak iPhone 3G on 4.0 Firmware With Redsn0w 0.9.5

Written By Sam on 16 April 2010

Just after Apple releasing the iPhone OS 4.0 there are many Jailbreak enthusiasts who found working exploits and released Jailbreak Videos after they are successful in Jailbreaking iPhone OS 4.0. Finally the iPhone Dev-Team ahs released the Jailbreaking Tool for 4.0 Firmware. Dev-Team has released redsn0w 0.9.5 beta which helps you in Jailbreaking 4.0 Firmware. The iPhone Dev-Team have confirmed that redsn0w 0.9.5 works with only iPhone 3G at present. If you have already upgraded to iPhone OS 4.0 you can Download Redsn0w 0.9.5 Beta to Jailbreak iPhone 3G on iPhone OS 4.0 Beta.

Do note that the Dev-Team confirmed that the current iPhone OS 4.0 Jailbreak tool, Redsn0w 0.9.5 currently works with only on iPhone 3G and the tool is right now available for Mac OS X. So if you are a Windows user you have to catch a friend who owns a Mac to get the work done. Below are the steps to jailbreak your iPhone 3G on 4.0 firmware.

How to Jailbreak iPhone 3G 4.0 Firmware With Redsn0w 0.9.5

  • Download the latest version of iTunes and update your iPhone 3G to the latest 4.0 Firmware.
  • Download redsn0w 0.9.5 for Mac and also download iPhone OS 4.0 ipsw file for iPhone 3G(iPhone1,2_4.0_8A230m_Restore.ipsw).
  • Now run redsn0w 0.9.5 and browse to the original iPhone OS 4.0 ipsw file.
  • Now select “Install Cydia” and click Next.
  • Now redsn0w will show you some instructions to enter into Recovery mode.
    • Hold down the “Power” button and immediately without releasing the power button, also hold down the “Home” button. Without releasing the “Home” button, release the “Power” button and keep holding the “Home” button for 30 second or until the installation starts.
  • Your iPhone will reboot once it is jailbroken

Note that the current release will not hacktivate or unlock your phone. So if you rely on an unlock then do not upgrade to iPhone OS 4.0 as updating your firmware ti 4.0 will upgrade your baseband and you will not be able to unlock it.

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