E-Check or(Ethernet Check) is when you update an Xbox 360 through your computer by hooking up the Ethernet cable to your computer and your computer is connected to wifi or some sort of device that allows internet access and you turn on network sharing on your computer letting the Xbox 360 there for get wifi. Now you update your Xbox 360 (most vonurlable position) but when your Xbox 360 downloads the firmware it goes through the computer first therefor letting you hack it through a application that would run like cmd.exe and replace files on the Xbox 360 so that it reads burned games
But i don't want to test it because i only have one xbox and if i mess it up it will render my xbox useless and i will just give up on my idea and stop coding it