Doing so can permanently damage the TV's motherboard.
If the TV does not detect the USB automatically: toshiba tv firmware update usb
The procedure varies slightly by model but generally follows these standard steps: Doing so can permanently damage the TV's motherboard
Before you touch the TV, you need to prepare the update file correctly. The file structure is strict; if the TV cannot find the file in the right place, it will not update. it will not update.