What is reset glitch hack on xbox 360

Do you need to open your xbox to do it?
Answer #1
The theory is by using a pre-programmed micro to attack a vulnerable chipset on the Xbox 360’s motherboard to send a pulse to the CPU and put it in reset condition until the CPU will run homebrew code.
Its very similar to J-tagging, all mods that you do to run homebrew stuff to the Xbox 360 will require you to open the Xbox 360.