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How to jailbreak iPhone 3G with iOS 4.0 ( Windows / Mac ) – redsn0w

Well, it didn’t take that long this time, at least that much is sure. Only a day after Apple officially released  iOS 4.0 for iPhone, the crafty guys from Dev-Team released redsn0w version 0.9.5b5-5 (available here for Mac and here for Windows) which will set free your beloved iphone. I made the mistake of upgrading to iOS 4.0 yesterday and I realized I can’t stand my iPhone 3G anymore. No multi-tasking, no SBSettings, no 5-Icon Dock 🙁 NO NPR while surfing :(. Enough complaining, I already fixed all that, and I also created a small tutorial published here for your jail-breaking pleasure.

Before starting, this method works for now only for iPhone 3G. 3GS owners will need to wait for a newer version of redsn0w.

1. Download redsn0w and unpack it somewhere on your desktop for example

2. Change your windows explorer settings to show system files (Vista/Windows 7): Open Windows Explorer and go to Organize->Folder Options->View->Hidden files and folders and select “Show hidden files and folders” option. Click Apply.

3. Start redsn0w.exe from the previously downloaded redsn0w application. Use the Browse button to navigate to the current IPSW (located C:\Users\Your user name here\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates). Replace C: with your system drive.

4. Plug-in your iPhone via USB and turn it off (in this particular order)

5. Follow the instructions from redsn0w application. Warning! after you turn the iPhone back on, don’t forget at Step 2 to hold the Home button without releasing the Power button. This will set your device to DFU mode

6.If you get a message stating “No device detected…” turn the iPhone off again and go back to step 5. Otherwise, Windows will install the special DFU mode driver for iPhone, successfully detect it and proceed with the jail-breaking process.

7. After reboot, the iPhone will display “Downloading Jailbreak Data…” for about a minute, then “Flashing NOR”, “Installing Bundles”, “Rebooting”, etc. At this point your iPhone is free and you can enjoy multi-tasking on your good old 3G iPhone :). First thing you’ll see after reboot is a wallpaper. Cydia will initially display a blank icon, be sure to open it and go through all the required updates. Upon restart, everything will work normally.

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  • Jailbreaking iPhone

    It was a good jailbreak :]

  • sam

    i got unable to recognize specified IPSW for Iphone 3G

    can someone help.

  • Sam, what iOS do you have on your iPhone? Also, is your ipsw file name the same as in the screenshots? If this method doesn’t work and you have iOS 3.21, iOS 4.0, iOS 4.01, you can alternatively use this method to jailbreak it.