If your TV is functional enough to access menus, or if you are performing a "forced" USB recovery, follow these general steps found in technical guides :
Extract the .rar file. Place the extracted .bin file directly in the root directory of the USB (not inside any folder). Insert and Update: Download Ecostar 49U565 Software rar
YouTube channels such as Good Helping often provide links to Mediafire or Google Drive repositories for specific EcoStar models. If your TV is functional enough to access
Look for technician-led sites like Kazmi Elecom which maintain extensive libraries of EcoStar firmware collections. Download Ecostar 49U565 Software rar
Use FAT32 formatting. Most TVs cannot read NTFS or exFAT drives for firmware updates.