: Place the extracted firmware file (usually ending in .bin or .pkg ) directly into the root directory (the main folder) of the USB drive. Do not put it inside any folders. Installation Steps for Toshiba 39L4300 Series
Ensure your TV is connected to a stable Wi-Fi or Ethernet connection.
: Plug the TV back into the AC outlet. On some models, you may need to hold the Power or Menu button on the TV panel while plugging it in to trigger the update.
