Step 2- Download the latest 3.1.2 firmware for Iphone 3GS and plug in your Iphone. Itunes will pop out, hold "Shift"(on keyboard) and click restore on Itunes at the same time. Find for the file you downloaded previously from the web and click on it to restore.
Step 3- Download Blackra1n and you'll see GeoHot's face there. Click on the Windows logo (beside the Apple) and save the file.
Step 4- Click the Blackra1n you've saved and a pop out stating "make it ra1n" will appear. Click on it. (Make sure your Iphone is plugged in to the pc when you click that!)
Ignore the pop out from Itunes asking you to restore before you can connect to Itunes.
It will then enter recovery mode
Once it writes there done and wait for reboot you'll probably see GeoHot's face on your Iphone
Just like this picture. Which means it's jailbreaking.
Step 5- After it's jailbroken, blackra1n will appear as an icon on your Iphone.
This will appear on your Iphone if you didn't unlock after jailbreaking.
On your WiFi. Click on sn0w and install it to unlock your phone. It'll take some time for it to search for your sim card network (make sure the sim card is not lock with pin code).
After you click install, there will be a post install Log to say thank you for installing etc. Just close it!
Step 6- Install Cydia and click manage/sources/edit/add. It'll pop out with a window stating http://_________. Type http://blackra1n.com/ and add sources. You'll see it appearing in changes after adding. If you want a clearer picture on what to do. Watch this video. Now, you don't have to jailbreak it over and over again. =). Next post is to install paid apps for free.
P/S: If anything goes wrong, like screen blackout or load for more than a minute, hold the home and power button for 20 sec to reboot or you can restore the firmware and try jailbreaking again.
Jailbreak your Iphone at your own risk though it's free. So far I successfully jailbreak an Iphone using this method.
