The possibilities with a rooted Galaxy S3 i9300 is staggering and is a key reason why many people chose to do rooting in order to get unrestricted access and rights to it. The following procedure is going to show you how to get it done.
While there are a number of tools that can be used for this, we highly suggest using the CF-Auto-Root file from the popular XDA developer, Chainfire. The CF-Auto-Root is firmware independent and it fully supports Android 4.3 as well as future firmware updates. But before you start, we urge you to go through all the instructions thoroughly as the website will not be held responsible for any damage that may occur from this process.
Before you being, there are a few pre-requisites that need to addressed.
- Make sure you have the USB drivers to enable transfer of files between your computer and Android device.
- To connect to the computer, enable USB Debugging and use Android SDK with it. (Go to Menu -> Settings -> Applications. Development will be an option here, following which will bring up the USB Debugging Mode)
- Create a backup of all of the data as it might get wiped during the process.
- Make sure it is not locked to any particular carrier and has more than 70% battery charge stored, to avoid complications or damage.
Once these are in order, you can proceed to the process.
Google the ‘CF-Auto-Root-m0-m0xx-gti9300.zip file specifically for you and download it.
Using 7zip (a free Open source Windows utility for manipulating archives), extract the downloaded zip file to acquire the ‘CF-Auto-Root-m0-m0xx-gti9300.tar.md5’ file.
Now download the Odin3 3.07 from Google on to your computer and extract it to get its .exe file.
Turn off and go into ‘Download Mode‘. This can be achieved by pressing and holding Volume Down, Home and Power buttons together, until the Android robot icon appears on screen. Then press the Volume Up button to activate the Download Mode.
Run Odin3 v3.07.exe as Administrator.
Now using the USB cable, connect (which should be in Download mode right now) to the computer. If connected properly and recognized, this will prompt an ‘Added’ message under message box.
Click the PDA button and navigate to where you extracted the ‘CF-Auto-Root-m0-m0xx-gti9300.tar.md5’ file from step 2 and select it.
Check to make sure that the ‘Auto-Reboot’ and ‘F. Reset Time’ checkboxes are checked in Odin.
Press the ‘Start’ button to initiate the flashing. This may take several minutes.
When the installation is complete, wait for restart, and a ‘PASS’ message on a green background will appear in the extreme top-left box. As soon as the home screen appears, disconnect from the computer.