You must extract the .rar file on a PC and move the internal .bin file to the root directory of a FAT32 formatted USB drive (ideally 4GB or 8GB).
Finding a "clean" download without malware requires using trusted technician forums. Download ONIDA LCO22VMO Firmware USB rar
With the TV's power off, insert the USB. Hold the power button on the TV panel (not the remote) and plug the power cord in. You must extract the
but having a different internal board number) can lead to a "black screen" or inverted colors. Download ONIDA LCO22VMO Firmware USB rar