Copy the firmware file (usually named upgrade_loader.pkg or similar) to the of the USB drive—do not put it in a folder. Install via USB : Turn off the TV and plug the USB drive into a USB port.
If your TV still boots to the home screen, you can check for official updates over the air: Download ONIDA LEO50FSAIN Software USB part02 rar
Do you have the or the specific panel model to ensure you download the correct version? How to update any Samsung TV's firmware using a USB drive Copy the firmware file (usually named upgrade_loader
The software for the is typically available through firmware repositories or specialized technician forums rather than a direct manufacturer portal. Because these files are often split into multiple RAR parts (e.g., part01, part02) to manage file size, you must download all parts and place them in the same folder before extracting. Download and Installation Steps How to update any Samsung TV's firmware using