Use a utility like WinRAR or 7-Zip on your computer to extract the actual firmware file (e.g., Update.img or a .bin file) from the .rar archive.
Place the extracted file directly onto the root directory of the USB drive; do not put it inside a folder. Installation Process: Unplug the TV from the power outlet. Insert the USB drive into the TV's USB port. Download TCL 32D12 Software rar
While holding the button, plug the TV back in. Continue holding until the update progress screen appears. Use a utility like WinRAR or 7-Zip on
Use a USB flash drive formatted to FAT32 . Download TCL 32D12 Software rar