: Format a USB flash drive to FAT32 . Copy the extracted firmware file to the root directory (not inside any folders). Initiate the Flash : Turn off the TV and unplug it from power. Insert the USB drive into the TV's USB port.
: Use a tool like WinRAR or 7-Zip to extract the contents. You are usually looking for a file named Update.pkg or something similar. Download TCL 24E3500 Software rar
If you obtain a .rar file for this model, follow these general steps to install it: : Format a USB flash drive to FAT32