Here is our step-by-step guide to jailbreak iPhone 3G running iPhone OS 3.0 using Redsn0w for Mac users.
Windows users can check this step-by-step guide which we had posted earler.
An important preparatory step before jailbreaking your iPhone 3G is to take a backup of your iPhone. Please refer to this post for more details.
Please note that Redsn0w does not jailbreak iPhone 3GS.
As with any hack, please proceed with caution as jailbreaking your iPhone could void it's warranty.
Following are the step-by-step instructions on how to jailbreak your iPhone 3G running the iPhone OS 3.0 using redsn0w for Mac:
Step 1: Create a folder on your desktop and name it Pwnage.
Step 2: Now download RedSn0w from here and put it inside the Pwnage folder that you just created.
Also, download the latest 3.0 firmware from the location given below and put it in the same Pwnage folder.
iPhone 3G OS 3.0 – iPhone1,2_3.0_7A341_Restore
Step 3: Extract the redSn0w.app application from the resn0w zipped file in to the Pwnage folder.
Step 4: Connect your iPhone to the computer and launch iTunes.
Step 5: In the iTunes, select your iPhone from the list of devices displayed on the left. Now hold down Option and click the Restore button on iTunes.
(Restore is preferred as it won't create any wasted space on your iPhone)
Step 6: Navigate to the Pwnage folder on your desktop and select the firmware ipsw. Click the Open button to continue.
Step 7: Once iTunes has finished updating your iPhone to the desired firmware, launch redsnw0w.app from the Pwnage folder on your desktop.
Step 8: Once redsn0w launches, click the Browse button.
Step 9: Select the firmware ipsw (that you placed in the Pwnage folder on our desktop) and then click Open.
Step 10: Once the firmware has been verified, click the Next button in order to continue.
Step 11: Make sure the 'Install Cydia' check box is selected and click the Next button.
Step 12: Make sure that your iPhone is plugged into the computer, and it's switched OFF. Now click on the Next button.
Step 13: redsn0w will now guide you through the steps to get into DFU mode.
Hold down both the Home button and the Power button for 10 seconds.
Now, Release the Power button and continue holding the Home button until redsn0w detects the device.
Step 14: You will see a message that states that your iPhone is being jailbroken. Your iPhone will then reboot.
Step 15: redsn0w will begin uploading the new RAM Disk.
Once this activity is completed you will see the messages 'Done!', which means that the device has been jailbroken.
Step 16: Click the Finish button.
And when your iPhone finishes rebooting (approx. 5 minutes). It will be jailbroken with Cydia on the SpringBoard.
Please note that this guide only jailbreaks iPhone 3G running iPhone OS 3.0, you will need to install UltraSn0w via Cydia to unlock iPhone 3G. You can checkout our step-by-step guide to unlock iPhone 3G using UltraSn0w.
Please don't forget to tell us how it goes in the comment section below and if if this guide was any help.