: If you only have part2.rar , the extraction will fail. You must locate part1.rar from the same source to successfully rebuild the firmware file.
To update your TCL LED40D2939 , you generally need to gather all parts of the firmware archive (such as part1.rar and part2.rar ) into one folder to extract the single .bin or .pkg file required for the TV. Since firmware files for older models like the LED40D2939 Download TCL LED40D2939 Firmware part2 rar
While holding the button, plug the TV back in. Keep holding until the "Software Upgrading" screen appears. : If you only have part2
: If your model has smart features, you may be able to update via Settings > Device Preferences > About > System Update if the TV is connected to the internet. : If you only have part2.rar