In order to use BlackSn0w, you need to jailbreak your iPhone3GS, 3G first using BlackRa1n RC3. Your iPhone MUST have Baseband 05.11.07.
Update to OS 3.1.2, Baseband 05.11.07 and Jailbreak your iPhone with BlackRa1n RC3:
ATTENTION loyal BlackRa1n user: (If you’re NOT a loyal BlackRa1n user please skip this step and continue.)
If you’re a loyal BlackRa1n user and still have BlackRa1n.app icon on your iPhone,you don’t need to jailbreak again just open the BlackRa1n from iPhone and hit the Ra1n button. You will see Icy replaced by an option “ra1n“. Install this to upgrade your app. After upgrading, run blackra1n.app again. You will see “sn0w”. Install this, and enjoy your unlocked iPhone.
Users who have already jailbroken their iPhones with Baseband 05.11.07 can Unlock their iPhone in two ways.
- From Cydia
- Using BlackRa1n.app
Both methods to Unlock iPhone Baseband 05.11.07 are mentioned below (Use any one of these).
1- Unlock iPhone Baseband 05.11.07 Using BlackSn0w (Cydia)
Open the Cydia and go to Manage Tab and Select Sources.
Press the Edit button at top-right
Press the Add button at Top-Left
Input the Source: http://blackra1n.com and hit Add Source.
Now Press Return to Cydia button.
then press Done at top-right
Now select the just Added BlackRa1n.com Source.
Then Press BlackRa1n to install it
Press the Install button at Top-Right
Then Press the Confirm button at Top-Right
That’s it… You have successfully unlocked iPhone on Baseband 05.11.07.
2- Unlock iPhone Baseband 05.11.07 Using BlackSn0w (BlackRa1n.app)
Now considering that your have successfully jailbreak your iPhone using BlackRa1n RC3 using the guide linked above.
You will find three packages available there.
Press the Sn0w option to unlock your iPhone 3GS, 3G Baseband 05.11.07 and hit the install button.
BlackSn0w will be downloaded and then installed.
You will be presented with a Post Install log for Blacksn0w. CommCenter will be restarted and there is no need to reboot. If your carrier doesn’t support 3G then disable it. Press the Close button to continue.
Your iPhone will then be Respring.
Congratz! you have successfully unlocked iPhone OS 3.1.2 on Baseband 05.11.07.
If you’re having issues with WiFi, YouTube, or GPS then follow this guide:
Jailbreak iOS 4.0
- How to: Jailbreak iOS 4.0
Unlock iOS 4.0
- How to: Unlock iOS 4.0