WARNING

• Apple can permanently patch the blacksn0w exploit in their next firmware update, please subscribe to our free newsletter and remember to check the latest news here before updating your iPhone.
• You must download Cydia’s “On File” system in case Apple blocks more exploits in future updates. We will post a guide on how to do this later, but for now you can still continue following this tutorial.
• * If you have a “No WiFi” problem after following this tutorial, go to Settings – > General -> Reset and tap on Reset Network Settings. That should solve any WiFi issues you have.
• If you are using T-Mobile you must go to Settings -> General -> Network and slide the Enable 3G button to Off.

blacksn0w Tutorial

1. Download our free iUserbar toolbar

2. Click the Downloads button and click on the blackra1n RC3 link to download it.

3. Connect your iPhone to your computer and open the blackra1n application.

4. Click the make it ra1n button.

5. blackra1n will now put your iPhone in to recovery mode and display the above image of Geohot. While in recovery mode, blackra1n will jailbreak your device.

6. Once blackra1n is done jailbreaking, your iPhone will reboot and you should see the blackra1n icon on your iPhone or iPod touch screen.

7. Tap the blackra1n icon to open it. Tap on Cydia, Rock, and blacksn0w and then click the Install button to install them.

8. Once you’ve installed the applications, restart your iPhone. To do that, just hold down the top button until the Slide to power off message appears. Slide the button, and wait for your device to turn off. Turn on your device and you should now see the applications you selected on your iPhone.

What now?

Congratulations, you have successfully unlocked your iPhone, now you can use your iPhone with other carriers! If you live in the US the only other carrier you can use your iPhone with is T-Mobile. Your unlock is nt permanent, and Apple will try to push updates to block it. We will always stay one step ahead and post a guide on how to safely update your iPhone without having your unlock compromised, so please subscribe to our newsletter and download our free iPhone OS 3 toolbar for important updates and downloads.

Related posts:

1. blacksn0w
2. Jailbreak iPhone 3.1.2 firmware with blackra1n
3. Jailbreak iPhone 3.1.2 firmware with Pwnage Tool 3.1.4

Update: Download and install blacksn0w unlock for iPhone 3G or iPhone 3GS
When Apple released the iPhone 3.1 firmware, it updated the baseband (modem firmware) for all iPhone 3G and 3GS users and fixed an exploit that allowed iPhone users to software unlock their iPhones. While there were some iPhone users that were smart enough to wait and update using iPhone Dev Team’s PwnageTool software, many people still updated through iTunes unknowingly and their unlock was compromised. While the firmware on an iPhone can be downgraded, baseband upgrades are permanent. For months iPhone owners that had their baseband (or modem firmware) updated to version 05.11.07 were left without an unlock.

Fortunately on November 4, this is all going to change. Expert iPhone hacker, Geohot has found an exploit in baseband 05.11.07  which will allow iPhone 3G or iPhone 3GS users to get their iPhone unlock back! At this moment Geohot  is working on his iPhone unlock dubbed blacksn0w and he plans to release it to us on November 4. As of this posting, Geohot has released nothing more than a screenshot with some random code, and a music video on YouTube (which you can see below), but we still trust him.

WARNING

Now that I’ve told you the good news, it’s time to tell you the bad news. The exploit that Geohot found (AT + XEMN) has been posted on the web, and I’m pretty sure it will be patched in the next update. I don’t know all the technical details of how this unlock works, but I do know that Apple is getting closer and closer to patching all the holes that are present in their baseband. Apple will most likely update their baseband in the next iPhone firmware update and patch the exploit that blacksn0w uses. Once Apple does that, iPhone users that update must not update using iTunes and instead they should wait for iPhone Dev Team to release their PwnageTool software that allows you to update without upgrading your baseband.

blacksn0w unlock details

The blacksn0w unlock will be available to download through blackra1n on November 4, mark your calendars if you plan on unlocking your iPhone 3G or iPhone 3GS! We will be posting a guide on how to download and install blacksn0w once it’s out. Feel free to subscribe to our free newsletter to receive updates through e-mail.

Related posts:

1. Download blacksn0w for iPhone 3G/3GS 3.1.2
2. iOS4: How to unlock with iPhone iOS4
3. Greenpois0n RC 5 Jailbreak Download for iPhone 4, iPhone 3GS, iPod touch, and iPad Available – No Windows Greenpois0n Jailbreak Yet