Insert the USB into the TV's USB port while the power is off.
To help find the exact file variant for your television, could you provide the , the panel model number found inside, or the specific screen resolution ? tp.sk506s.pb802 firmware
The firmware on this board is the operating system (usually a Linux kernel specific to embedded TV systems). It contains the bootloader, the kernel, and the root file system. Crucially, it holds the . Insert the USB into the TV's USB port while the power is off