Recently Apple released the latest iPhone Software update OS 3.1.2, the latest firmware update contains a baseband firmware update which is not compatible to unlock. Which means if you upgrade your iPhone 2G 3.0 or 3.1  to 3.1.2 your baseband will also gets upgraded. When this happens, you can’t unlock with any utility in the present market. Thanks to Dev team, PwnageTool (Only for Mac) program let’s you update your main firmware without touching your baseband firmware.

We have put a simple step by step guide which will show you how to upgrade, jailbreak and unlock your iPhone 2G from Firmware 3.0 or 3.1 to Firmware 3.1.2 without upgrading your baseband.

If you a Mac user follow this link : How to Jailbreak and Unlock iPhone 2G OS 3.1.2 on Mac

Dont’s:

• Don’t update your iPhone OS from 3.0 or 3.1 to 3.1.2 using iTunes directly. (First we need to download a Costume firmware IPSW file for your iPhone 2G. And then restore this file to your iphone using iTunes)

Requirements :

• iPhone 2G
• Windows XP / Vista / Windows 7
• iTunes 9.0.1
  
• iPhone 2G Custom Firmware OS 3.1.2 – iPhone 2G Custom Firmware 3.1.2

Jailbreak and Unlock Process.

Step 1: Download all required files and save them on your Desktop (In a single folder).

Step 2: Close all running application on your Windows PC.

Step 3: Connect your iPhone 2G to PC

Step 4: Get your iPhone into DFU Mode.

Step 5: By now you should see Windows recognize your device (You will see it at the bottom right corner.)

Step 6: Start you iTunes by double clicking iTunes icon.

Step 7: Hold the “Shift” Key and click on the restore button.

Step 8: Now, navigate to the folder where you save the iPhone 2G Custom Firmware 3.1.2 and click “Open”

Step 9: The restore process should start (This process take about 5 to 10 minutes).

Great – You have jail-broken and unlocked your iPhone 2G. (If you have any issues are challenges please leave your comments. I will be watching the comment section.)

Happy Hacking…