To update your using a multi-part RAR firmware (specifically parts 01 through 06), you must first merge the parts into a single usable image file before transferring them to your TV. How to Recombine Multi-Part RAR Files
Once you have the extracted firmware file, follow these steps for a manual USB update: How to Update TCL Tv by USB
: Once finished, you should have one large file (e.g., update.img ). This is the only file you need for the TV. Installing the Firmware on your TCL LED49S4900
: The extraction software will automatically detect and pull data from the subsequent parts (02, 03, etc.) to recreate the original file, which is typically a .bin or .img firmware file.
: Right-click on only the first file ( part01.rar ) and select "Extract Here" or "Extract Files" using a tool like WinRAR or 7-Zip.