If you own a Samsung GT-i9300, also known as the Galaxy S3, you might have noticed that the phone is not performing as well as it used to. One of the reasons for this could be outdated firmware. Firmware updates contain fixes for bugs and improve the overall performance of the phone. In this article, we will guide you through the steps to update your Samsung GT-i9300 firmware to the latest version.

Step 1: Backup your important data

Before starting the firmware(download the firmware from here.) update process, it is essential to back up all your important data like contacts, messages, photos, and videos. Updating firmware can result in the deletion of all data stored on your phone’s internal memory. Therefore, it is crucial to back up your data to avoid any loss.

Step 2: Download the firmware file

The next step is to download the firmware file for your Samsung GT-i9300. You can download the firmware file from the official website of Samsung or other reliable sources. Make sure to download the correct firmware file for your specific model number and country. Once downloaded, extract the firmware file to a folder on your PC.

Step 3: Install Samsung USB drivers

Make sure to install Samsung USB drivers on your PC before proceeding with the firmware update. These drivers enable your PC to communicate with your Samsung GT-i9300. You can download Samsung USB drivers from the official website of Samsung.

Step 4: Enter download mode

Now, turn off your Samsung GT-i9300 and reboot it in download mode. To do this, press and hold the Volume Down + Home + Power buttons simultaneously. Release the buttons when the warning screen appears, and then press the Volume Up button to enter download mode.

Step 5: Connect your phone to PC

Connect your Samsung GT-i9300 to your PC using a USB cable. Your phone should be recognized by your PC, and you should see the message “Added” in the Odin window on your PC.

Step 6: Load firmware file into Odin

Now, open Odin software on your PC and load the firmware file that you extracted earlier into the PDA section of Odin. Make sure to uncheck the “Re-Partition” option in Odin.

Step 7: Start firmware update process

Once you have loaded the firmware file into Odin, click on the “Start” button to begin the firmware update process. Do not disconnect your phone from your PC during this process.

Step 8: Wait for the firmware update to finish

The firmware update process can take several minutes to complete. You can monitor the progress of the firmware update in the progress bar in Odin. Once the firmware update is complete, you will see the message “PASS” in Odin.

Step 9: Reboot your phone

After the firmware update is complete, your Samsung GT-i9300 will automatically reboot. The first boot may take longer than usual, so do not worry if it takes some time.


Updating the firmware of your Samsung GT-i9300 can significantly improve its performance and fix bugs. With our step-by-step guide, you can easily update your Samsung GT-i9300 firmware and enjoy a faster and smoother user experience. Just remember to back up all your important data before starting the firmware update process to avoid any loss.

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