The software usually comes in a compressed .rar or .zip format. Extract the contents using 7zip or WinRAR and run the Burn_Card_Maker.exe executable.

Amlogic Burn Card Maker is a specialized Windows utility used to flash or "burn" firmware image files onto a micro SD card for Amlogic-based Android TV boxes. It is primarily used to unbrick devices that are stuck on a boot loop or to manually upgrade firmware when over-the-air (OTA) updates are unavailable. CoreELEC Wiki Key Features of Version 2.0.3 English Language Support

Plug the TV box into a television or monitor via an HDMI cable so you can monitor progress.