Use a standard USB 2.0 flash drive, preferably formatted to FAT32 . Copy the extracted firmware file directly to the root directory of the USB drive (do not put it in a folder). Manual Installation: Power off the TV and unplug it from the wall. Insert the USB drive into the TV's USB port. Hold down the physical power button on the TV panel.
Designed for seamless operation and to solve common software-related performance issues. Download TCL LED49S4900 Firmware part01 part09 rar
Use a utility like WinRAR to extract the multi-part files. This will typically result in a single software file, such as a .bin or Update.img file. Use a standard USB 2
Manual updates via USB typically trigger a factory reset. Be sure to have your account login information ready to set up the TV again after the update completes. Insert the USB drive into the TV's USB port
The TV will automatically upgrade the software, which may take about before restarting.
If you have downloaded the multi-part RAR files (Part 01–09) for a manual update, follow these steps to prepare and install:
Occasional updates may introduce new feature improvements or UI changes. How to Install Firmware via USB