: You can find various Onida stock firmware files on community-driven sites like Scribd or specialized tech channels.
: Always use the "Eject" option on your computer before removing the USB to prevent file corruption. Installation Steps (USB Flashing) Standby Mode : Power off the TV and put it in standby mode. Download ONIDA LEO43HG Firmware USB rar
Do you have the (e.g., TP.MT5510S.PB801) from inside the TV to help narrow down the specific firmware file? : You can find various Onida stock firmware