How to Update Galaxy S3 GT I9300 with XXELLC Jellybean 4.1.2 Firmware

Samsung released the new XXELLC Jellybean 4.1.2 Firmware for Galaxy S3 network unlocked devices. The new firmware carries lots of fix such as overheating and poor battery issues. The new firmware is only for Samsung Galaxy S3 Smartphone, which is unlocked. You can install this official firmware update on your device with the helps of Samsung Kies, if you want to install the update manually on your device, then below is the complete guide which helps you to install XXELLC Jellybean Android 4.1.2 Firmware on your Samsung Galaxy S3.

The best thing about this firmware is that if your are on Custom ROM or have the rooted device, after applying this update warranty will be restored which is the best part. So before installtin the latest firmware update on your S3, do take the backup of all your app and contacts, you can find some of the best backup application here. So lets start the update process.

Update Galaxy S3 GT I9300 with XXELLC Jellybean 4.1.2 Firmware

Note:- Use these instructions at your own risk. We shall not hold any responsibility or liability for whatever happens to you or your device arising from your use of the info in this guide

Step 1. Enable USB debuggin modeon your device, Read here How To Enable USB Debugging Mode in Android Devices

Step 2. Now Download the latest Samsung Drivers on your Computer, without these drivers you can’t update the device. Download Samsung latest drivers from here.

Step 3. Now time to download the Latest Firmware on your PC, Download XXELLC Jellybean 4.1.2 Firmware Package and Odin from here and extract both the files to the desktop.

Step 4. Turn of your Samsung galaxy S3 and enter in Download Mode. To do this press the Volume down rocker key + Menu Button and holding these both, press the power button at the same time . Now you will see download mode and you will be asked if you want to cancel or continue. Press volume up to continue or volume down to cancel and reboot.

Step 5. Now Run the ODIN application on your desktop and connect your device with PC via USB cable. If the device is connected successfully, one ID:COM boxes will turn yellow after some time.

Step 6. Now Select the files that you have to flash/install on your Galaxy S3. These files are to be found from the extracted files in Step 3.

Click on ‘PDA’ and select file with ‘CODE’ in its name.
Click on ‘Phone’ and select file with ‘MODEM’ in its name. Ignore this step if there is no such file.
Click on ‘CSC’ and select file with CSC’ in its name. Ignore this step if there is no such file.
Click on ‘PIT’ and select the .pit file. Ignore this step if there is no such file.

Step 7. Now hit the Start button on ODIN application to install the firmware on your device. The installation process will take some time, After finishing the process your device will reboot. After you see the home screen, unplug your phone from the computer.

ow your device is update with the latest XXELLC Jellybean 4.1.2 Firmware, Go to Settings > About phone to verify what build have you installed.

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