: Press and hold the physical Power button on the TV (not the remote).
: Plug the USB drive into the USB port on the back or side of the TV. Download Tcl L32D3000A RD853V AP@asad rar
: Use a utility like WinRAR or 7-Zip to extract the contents. You are looking for a file that typically ends in .bin or is named Update.img . : Press and hold the physical Power button