Searching for indicates you are at the peak of your frustration—your GPS is frozen, your PC is overheating, and time is running out. However, armed with the knowledge from this guide, you now understand that the "hot" issue is a software timing bug, not a hardware failure.
Putting the Garmin device into "Pre-boot" mode (often by holding a specific area of the screen or button while connecting to USB) and using Updater.exe to send the Cure firmware. garmincure3exe hot