Can anyone tell me what ECFirmwareMajorRelease stands for?
The key can be found in the registry at
"EC" is deacronymized as "Embedded Controller" and means a chip that processes some model-specific hardware events and also interprets ACPI pseudocode. (At least everything I found on the web refers to EC in this way. Also EC references are mostly found with ThinkPad laptops. This is a small explanation of what it does on ThinkPads).