turn off the power or remove the USB until the TV restarts automatically.
If you have downloaded ONIDA_42FIE_43FIE_Software_USB_part1.rar , you likely have a second part (part2.rar) as well. Download ONIDA 42FIE&43FIE Software USB part1 rar
Copy the extracted firmware file directly to the of the USB drive (do not put it inside a folder). Run the Update on Your TV : turn off the power or remove the USB