Please read through the below notes before taking action to jailbreak your iPhone 3G:
- RedSn0W only suitable for the recent iPhone OS 3.0 firmware updated.
- This jailbreak guide is designed for Windows user only. For Mac user, you can use PwnageTool 3.0 to jailbreak.
- Redsn0w is work for Original iPhone (1st Generation), Original iPod touch, iPod touch 2G and the iPhone 3G (not the iPhone 3GS).
- For iPhone 3GS user, please do not use Redsn0w to jailbreak your new iPhone. Presently, there is no way to jailbreak iPhone 3GS.
- If you’re using lower version of firmware (e.g. 1.1, 2.0, 2.1 or 2.2), you can also follow these jailbreak procedures to upgrade the firmware to 3.0. But please bear in mind, that you’ll have to re-install all the Cydia applications after upgrade. And, at the time I write this post, not all Cydia applications (e.g. AptBackup, iBluetooth, Backgrounder, iRealSMS, MySMS, BossTool, Quickgold) are compatible with iPhone 3.0. So, if you have any cydia applications that you rely on, please ensure its compatibility before upgrading.
Step 2: Download RedSn0w 0.7.2 (or download here) and iPhone 3G 3.0 firmware. Save them all in the same folder. Extract/unzip Redsn0w. Make sure you have all the files in place before continue.
Step 3: Just connect your iPhone to your computer via USB cable and launch iTunes. Select your iPhone in iTunes. You might see all information about you iPhone and the button “Upgrade” and “Restore” appear in iTunes window.
Step 4: Hold the “SHIFT” key and click the “Restore” button simultaneously. The iTunes file dialog will pop up for you to select the firmware file. Locate the “iPhone1,2_3.0_7A341_Restore.ipsw” that you have downloaded in previous step and click “Open”.
Jailbreak using RedSn0w
Step 6: Your iPhone should completely restore to firmware 3.0. But it’s still locked right now. Please power off your iPhone (but keep it connected with USB cable). However, If your bought unlocked iPhone original from factory settings you iTunes shows that your iPhone is unlock successfully and you don't need to unlock it, just proceed to the next step.
Step 10: Redsn0w will instruct you to put your iPhone into DFU mode. Ensure your iPhone is connected (via USB) and it’s turned OFF. If you’re ready, click “Next” to continue.
Step 12: If you have successfully put the iPhone into DFU mode, redsn0w will automatically start the jailbreak process.
Step 13: During jailbreaking process, your iPhone screen shows downloading jailbreak data and flashing NOR progress. What you have to do just keep waiting and don’t touch anything to your iPhone.
Step 14: RedSn0w will let you know the jailbreak process is successful. Your iPhone will be restarted automatically. This process will take 3-5 minutes to complete. Just wait until the process been done and your iPhone will be rebooted again.
Step 16: If your iPhone 3G is still unlock and not receive your carrier signal, you can checkout my post on how to unlock iPhone 3G for OS 3.0 using Ultrasn0w. For those who already use unlocked iPhone version from previous factory setting you can ignore this step. However this step is use full for those who would like to unlock the iPhone 3G.
Step 17: For beginner user, you might be want to know what to do after Jailbreak. Check out my post here on how to use Cydia. For those who already knew about the Cydia you could ignore this step.
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