Have you updated to your Galaxy S3 GT I9305 with the latest Jellybean 4.1.2 firmware? If “yes” you can root your device to maximize the customization of your phone. Here I am directly coming to the steps involved in how can we root Galaxy S3 GT I9305 on XXBMA3 Jellybean 4.1.2 Firmware. Please note that rooting your device will void the warranty of your device.
Things to ensure before proceeding to root your Galaxy S3 GT I9305
But do back up your call log using call log and restore apps, contacts (you can sync with Gmail app, SMS (using SMS back up and restore apps), gallery data. Take a note of your phone’s APN and MMS Settings from the path
Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names
Also you need to enable the USB debugging. You can do it from the path
Settings > Applications > Development > USB debugging.
Finally ensure that your phone is fully charged. Now to the steps.
Steps to Root Galaxy S3 GT I9305 on XXBMA3 Jellybean 4.1.2 Firmware
Download XXBMA3 Jellybean 4.1.2 Firmware Package on your computer which also includes Odin. Extract the files on your computer and open Odin.
Switch off your phone to entered in the Download mode. To enter Galaxy S3 GT I9305 in the download mode, press and hold the volume down key, middle button and the Power Button.
Keep Odin opened and now connect your phone in the download mode to the computer via USB cable.
Keep a look on Odin. The ID: COM section should be in Yellow. It indicates that all the drivers have been successfully installed on your device. If not you need to remove the USB cable, turn off Odin and re-install the drivers and repeat the above procedures.
In the Odin make sure that Auto Reboot and F. Reset Time check boxes are selected.
Now the final step of rooting your Galaxy S3 GT I9305. Select “PDA” and choose the “CF-Auto-Root-m3-m3zh-gti9305.tar.md5”. Now click on “Start” to begin rooting. After the process finish, you can remove the USB cable and reboot your device.
Disclaimer: Follow this tutorial at your own risks. II folks will not be liable for any loss or damage arises due to the rooting.