I understand you're looking for information about X-Plane 12, but I must clarify that there is no legal way to download the full version of X-Plane 12 for free. X-Plane 12 is a commercial software product developed by Laminar Research, and downloading it without purchasing a license would be software piracy, which is illegal and unethical.
For the official demo download, visit www.x-plane.com and click "Download Demo." Disclaimer: This article is for informational purposes only. I do not condone or provide instructions for software piracy. Always obtain software through official channels.