Jailbreak iPhone 3GS Using redsn0w (Windows)
This guide explains how to jailbreak your iPhone 3GS with Redsn0w on Windows. The guide assumes that your iPhone 3GS is updated to firmware version 3.0.
It is required that you have iTunes 8.2 not higher, not lower, in order to let the iPhone 3GS jailbreak properly the first time.
Get Redsn0w
Redsn0w is only available as bittorrent download. You can download using this torrent (usually really fast).
Download the firmware 3.0 for iPhone 3GS
The 3.0.0 (3GS) version of the iPhone firmware is available at the apple website: iPhone2,1_3.0_7A341_Restore.ipsw (recommended to be downloaded using the FireFox browser as it does not try to extract the file automatically in the download process).
Create a folder on your desktop and call it “mksnow”. Extract the downloaded firmware software in the folder and move Redsn0w into the folder too.
Launch Redsn0w
Double click on the Redsn0w program.
Click the “Browse” button.
Navigate to the firmware restore file we downloaded and put in the “mksnow” folder and click “Open”.
Click the “Next” button.
Select “Cydia” and “Icy” and click “Next”.
Switch off your phone and disconnect the USB connector on the bottom. When it is completely off, hold home button and plug in again while holding the home button.
Redsn0w will now jailbreak your iPhone and it will finally report that it is finished. Wait a while for a lot of text the iPhone screen and all the progress bars to complete. When the phone boots and starts up with the apple and lock screen, then the process is donw and your iPhone 3GS is jailbroken.
Continue if necessary to unlock it using ultrasn0w.”
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