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How-To jailbreak iPhone 3G iOS 4.1 using redsn0w for Windows

As we just announced, iPhone Dev-Team just released their redsn0w Windows version designed to jailbreak iPhone 3G and iPod touch 2G devices running iOS 4.1. We download it, installed it and here is how to used it:

1. Download redsn0w for Windows from here.

2. Unzip it, install it.

3. Start  redsnow.exe you just downloaded. Click on the Browse button to navigate to C:\Users\Your user name here\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates and select your 4.1 IPSW file.

For my iPhone 3G, the IPSW for 4.1 is called iPhone1,2_4.1_8B117_Restore.ipsw

If you don’t have it, you might download it from the following locations (depending on your device).

Download iOS 4.1 ipsw  for iPhone 3G here.

Download iOS 4.1 ipsw for iPod Touch 2G here.

4.After you selected the proper IPSW, press next. A pop-up will appear indicating the current actions and that it is patching the kernel. It will disappear in several seconds.

5. You will need to select which options you wish to have. Unless you absolutely want it, I wouldn’t enable any other options other than “Install Cydia” and “Enable battery percentage” which are the default. iPhone 3G is just not fast enough for wallpaper and other goodies and it doesn’t have enough memory for iOS 4.1 style multitasking.

6. Turn OFF your device per instructions, and have it connected via USB port. Click Next.

7. Follow the instructions exactly as displayed to put your device in DFU mode. Be sure to read them carefully first! If you did everything right, you’ll notice Windows loading an Apple Mobile Device USB Driver USB driver.

  • Hold the Power Button for 3 seconds
  • While keep holding the Power Button pressed, hold the Home button for 10 seconds
  • Release the Power Button while holding the Home button for another 30 seconds

8. redsn0w will need several minutes to process your device displaying “Uploading ramdisk”. Your iPhone . iPod will show a hard drive picture with a green arrow on top and the text ” Downloading Jailbreak Data…”. Again, this process will take quite a while. If for some reason it gets stuck at this step, try restarting the process several times, or choose a different computer. Don’t forget that you DO need to have iTunes installed.

In my case, it got stuck during “Uploading ramdisk” (Vista, x64) and doesn’t matter what I did, it just didn’t work. I had to move on my laptop (Windows 7, x64), install the new  iTunes 10 and restart the process.  This time it worked fine, so it is definitely something related to USB communication.

9. That’s about it, enjoy your jailbroken iPhone or iPod.

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  • Jay Todd

    Ok it works… But no audio goes out Of apple dock!!!!

    What do i do??