Blacksn0w has already been released by GeoHot on November 4th. For those who don’t know anything about blacksn0w, it is an unlocking tool developed by popular iPhone developer GeoHot. It helps iPhone to unlock baseband 05.11.07 on iPhone 3.1.2 firmware.
I have already posted a simple guide to jailbreak the iPhone firmware 3.1.2 using blackra1n RC3. You can use this guide to jailbreak your phone and then use following guide to unlock the latest firmware.
Guide to unlock iPhone 3.1.2 with blacksn0w
1. Follow the iPhone 3.1.2 jailbreaking steps given here and install Cydia from blackra1n app.
2. Open Cydia application.
3. Select Manage and go to Sources.
4. Go to Edit and Add following repo.
Repo: http://blackra1n.com
5. Cydia will install the repo. Open it and install blacksn0w.
6. Restart iPhone.
You’re done. Enjoy your unlocked iPhone.
There is another method to unlock iPhone 3.1.2. Check out the following steps.
Steps to follow:
1. Open blackra1n app.
2. Select ‘sn0w’ to install on your iPhone.
3. That’s it. The sn0w tool will automatically unlock iPhone 3.1.2 firmware.
If you have any doubt, feel free to ask in comment section below. I will try to solve them.