Step 1: Download the updated firmware package and extract the zip file. [Download link 2]Step 2: Download Odin v3.07 and extract the zip file.Step 3: Switch off the Galaxy S3 and put it in Download Mode. To do this, press Volume Down + Home + Power buttons, and then press Power again to enter Download Mode.Step 4: Run Odin v3.07.exe as an Administrator.Step 5: Connect the Galaxy S3 to your computer via the USB cable while the phone is in the Download mode.If the phone is connected properly, you will see that the ID:COM section turns Yellow with a message appearing in Odin’s message box, saying “Added!!” If not, check whether the USB drivers are installed properly on the computer.Step 6: Now, select the following files that were extracted in Step 1 to install them:- In Odin, click the PDA button and select the .tar.md5 file.- Click the Phone button and select file with MODEM in its name- Click the CSC button and select file with CSC in its name- Click the PIT button and select the .pit fileStep 7: In Odin, select the Auto Reboot and F. Reset Time options, but make sure that the re-partition checkbox is not selected.Step 8: Now, click on the Start button in Odin to begin the installation process.Once the installation is complete, the phone will reboot on its own. Once you get the Samsung logo on the home screen, you can unplug the device from the computer and close Odin.[Source: Team Android]