Right-click part01.rar and select "Extract Here" using a tool like WinRAR or 7-Zip . This will automatically combine all parts into a single firmware file, typically ending in .pkg , .img , or .bin .
If you have downloaded firmware as split files (like part01.rar through part06.rar ) from a third-party source: Download TCL LED43S4900 Firmware part06 rar
Plug the drive into the USB port on the back or side of the TV. Right-click part01
Release the button when you see an "Upgrading" message or a blinking LED. Do not turn off the power during this process, which usually takes about 4 minutes. TCL LED43S4900 Key Features This model is a Full HD Smart TV launched in 2017. Release the button when you see an "Upgrading"
Contact TCL Customer Support to request the specific .bin or Update.img file for your model if the online update fails. 2. How to Handle Multi-Part RAR Files