: Extract the .bin file from the .rar archive and place it in the root directory of the USB (not in a folder).
Finding a specific "rar" file for this firmware usually involves specialized technician forums or firmware databases. Here is how you can locate and use it: Where to Find the Download
If you find the .bin file inside the .rar archive, the general procedure is: to FAT32.
: The "1920x1080" part of your query is the resolution. Ensure your TV panel matches this; installing 1080p firmware on a 720p panel can result in a distorted image or a "no display" state. How to Install the Firmware
: Turn the TV on. On most universal boards, the indicator light will flash rapidly during the update. Do not turn off the power until the flashing stops and the TV reboots.