The root method that we will opt for here will make use of Chainfire’s CF-Root, which is arguably the easiest rooting technique for a huge variety of devices by now. Do understand, however, that while this method is tried and tested, we or the developer cannot take any responsibility for any damage to your device as a result of following these instructions. Proceed at your own risk.
- GT-I9300 (International version) with more than 50% battery remaining, 100% just to be on the safer side of the fence
- CF-Root package for Galaxy S3
- Odin3 v3.07
- Latest Samsung USB drivers (should already be there if you have Kies installed)
- USB cable for connection
Step 1: Download both Odin3 and CF-Auto Root packages from the link above. Extract the contents of the root package to a location of your choice.
Step 2: Launch Odin3, click the PDA button and select the .tar.md5 file that you extracted from the CF Root package.
Step 3: Make sure that Re-partition is unchecked in Odin3, and that nothing is selected in PIT.
Step 4: Turn off your Galaxy S III and put it in download mode by pressing and holding volume down+power+home at the same time, and then pressing volume up for confirmation.
Step 5: With your device in Download Mode, connect it to the PC using the USB cable. If all went correct, Odin3 will detect the device, indicated by a COM address in the top left corner of Odin3.
Step 6: Double check that the correct PDA file is selected and that re-partition isn’t checked, and hit the Start button to begin flashing the rooted kernel.
Step 7: Once the flash is complete, the phone will reboot and enter recovery mode, automatically initiating the rooting procedure. It will reboot once more.
That’s it – your Galaxy S III GT-I9300 is now rooted on the latest XXEMC2 firmware. Enjoy!