Open the back of your TV and look for a code printed on the green mainboard (e.g., TP.VST59.P83 or T.MS638.739 ).
Use a small USB drive (8GB or 16GB is best). Format it to FAT32 . mstarupgradebin link
If done correctly, the TV's indicator light will start blinking rapidly, or a "Software Upgrading" progress bar will appear. Open the back of your TV and look