How to Root Samsung Galaxy S3 on Jellybean 4.1.2 XXBMA3 Firmware
For the Samsung Galaxy S3 users that have updated their firmware to Jellybean 4.1.2 XXBMA3 Firmware Update, a sure fire rooting process is working to allow users optimal customization to their smartphone. Be wary of the fact that the rooting process may not always work as intended, and any damage done to your smartphone will be your own responsibility. The guide to rooting the Samsung Galaxy S3 on the Jellybean 4.1.2 XXBMA3 Firmware Update is rather simple and requires a few precautions to be made before the rooting process itself can start.
To prevent any loss of data it is highly advised for users to create a backup for all information in their smartphone. For example, save all of your contacts by syncing them to the Gmail application. Also you can save all of your text messages using the SMS and Backup app. Furthermore you can save all of your apps, games, songs and videos to external storage mediums.
After you have backed up your device, you must make sure that USB debugging is activated on your phone. To make sure it is, you must go to Settings, then Applications, then Development and then finally make sure the USB debugging box is checked.
Lastly your device must be charged to at least 60% battery power to assure your phone does not turn off in the middle of the rooting process. If the phone does turn off do any unexpected reasons, such as battery power running out, malfunctions and damage to your phone are probable. So it is in your best interest that your device is optimally charged before starting the rooting process.
Once all of the precaution measures have been taken we can now begin the rooting process. First and foremost you must download the files that are required for the rooting process. Download XXBMA3 Jellybean 4.1.2 Firmware Package from here and then extract the files to an easily accessible directory on your computer. This download also contains Odin.
Now that you have successfully downloaded and extracted the rooting files, you must turn off your Samsung Galaxy S3 to set it to download mode. After the phone has been powered off, press the volume down and central button on your device, now while simultaneously pressing these buttons you must also press the power button. If done correctly a green android robot will appear on the screen of your phone confirming that your phone is now in download mode.
After the device is in the download mode, run the Odin software you previously downloaded then connect your smartphone via usb cable to your computer. The ID: COM section in Odin will flicker a yellow light confirming that all drivers have been successfully installed on your device. Now you must also make sure that only two options are checked in the Odin software; Auto reboot and F. Reset Time checkboxes are the only ones to be checked. Leave all the other checkboxes unchecked.
Considering that all of the previous steps have been undertaken you will now have to click on “PDA” and then select “CF-Auto-Root-m3-m3zh-gti9305.tar.md5. After which you must click on start and hence the rooting process will start. After the scripting has been completed you can download the root checker application from the google playstore to make sure that your smartphone has been rooted. If in the unlikely event that your phone has not been rooted you can undergo the steps more carefully again.