Many “Chrome OS ISO 64-bit repack” files on torrent sites are under 2GB—suspiciously small. A real bootable OS image is usually 4GB–8GB.
Unofficial builds frequently lack proper driver support for Wi-Fi, audio, and trackpads.
Be extremely cautious of websites offering "Chrome OS ISO Repacks" or "Pre-activated ISOs."
Let the tool download and "burn" the image to your drive.