Follow the step-by-step guide here to jailbreak iPhone 3GS with the easiest free method available on earth. This is a straight-forward method and you don’t have to spend a single cent to jailbreak iphone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPad 2, iPad 3, iPad 4, iPad mini, Apple TV, Apple TV 2, Apple TV 3, iPod Touch 4G or iPod Touch 5G running with iOS 6.1.6, iOS 6.1.3, iOS 5.1.1, iOS 4.3.5, iOS 4.2.1 or earlier iOS versions. You will be able to jailbreak your iDevice and download Cydia to it by following the tutorial here.
How to Jailbreak iPhone 3GS
Before you begin, please perform a full backup using iCloud or iTunes. This is to make sure you can restore it if something goes wrong during the jailbreak process. Also, please understand that jailbreaking your iPhone, iPad or iPod Touch may void the warranty provided by Apple. It is all at your own risk. Once you are ready, let’s begin to untethered jailbreak iOS 6.1.6. For iOS 7 jailbreak, you can use RageBreak with a Mac or PC. For iOS 8.4 jailbreak, you can use TaiG Jailbreak. As for iOS 9 jailbreak, Pangu is so far the best jailbreak tools for all iOS 9.0-iOS 9.1 devices.
Step 1: First of all, go to Settings -> General -> About -> Version and check if your iPhone 3GS is running on iOS 6.1.3 through 6.1.6. If yes, proceed to step 2.
Step 2: Access to this link to download p0sixspwn 1.0.8 jailbreak tool. p0sixspwn is currently one of the best iOS 6 jailbreak tools. Select Mac OS X or Windows to download this application for free.
Step 3: For windows, extract the zip file and click on the p0sixspwn-v1.0.8.exe to install p0sixspwn jailbreak tool. Launch p0sixspwn once it is installed. It is vital to run the program as an administrator if you are jailbreaking with a PC.
Step 4: p0sixspwn will prompt you to connect your iPhone, iPad or iPod Touch to your PC or Mac. Connect it using a USB cable.
Step 5: p0sixspwn will detect your iDevice and show your iOS version on the screen. Click on the Jailbreak button to begin jailbreak.
Step 6: During the jailbreak process, you will see messages appear on the screen of your PC/Mac. These messages are:
Connecting to device …
Getting payload files from Apple .. (Check your internet connection if it hangs here)
Gathering information to generate jailbreak data…
Sending initial data …
Waiting to reboot. Do not unplug your device.
Waiting for device…
Remounting root…
Sending Cydia and untether payload to the device…
Step 7: It is an automatic jailbreak process and you don’t have to do anything until you see a message “Your device is now jailbroken, it now preparing to reboot automatically.”
Step 8: You are now jailbroken. Go to your home screen (or second page) and you will see Cydia icon. Tap on it to access to Cydia App Store. Add the best Cydia sources to install the best free Cydia apps to your iPhone, iPad or iPod Touch.
Try to downgrade your iTunes from 11.2.2 to 11.1.4 if you are having problems to jailbreak iOS 6.1.3 to iOS 6.1.6 with p0sixspwn. Alternatively, you can jailbreak an iPhone 3GS with Redsn0w if p0sixspwn doesn’t work for you. Lastly, please do not hesitate to leave a message for any difficult issues you face to jailbreak an iPhone 3GS.