to request the specific firmware for your model and region. Format a USB drive to FAT32 .
If an update is available, follow the on-screen prompts to install it. Download TCL LED40S4900 Firmware part3 rar
Finding a specific "part3.rar" file for firmware typically indicates a split archive from a third-party site, which can be risky. Official TCL firmware is usually provided as a single .bin or .img file and is rarely hosted on public websites for direct download. Safe Methods to Update Your TCL TV to request the specific firmware for your model and region