: Plug the USB drive into the USB 1 or USB 2.0 slot on the TV.
Do you have the (e.g., TP.MT5510S.PB801) from inside the TV to help narrow down the specific firmware file? Download ONIDA LEO43HG Firmware USB rar
Downloading and installing firmware for the involves identifying the correct motherboard file and using a formatted USB drive to flash the system. Identifying and Downloading Firmware Finding the exact firmware file for the Onida LEO43HG : Plug the USB drive into the USB 1 or USB 2
To install the firmware, your USB drive must be correctly prepared: : Most smart TVs only recognize USB drives
Alternatively, if the TV is still functional, you can check for official over-the-air updates by navigating to > Device Preferences > About > System Update .
: Place the unzipped firmware file (often with a .pkg , .bin , or .img extension) directly in the root directory of the USB drive. Do not put it inside any folders.
: Most smart TVs only recognize USB drives formatted to the FAT32 file system.