It doesn't work for me.

well: it works in the private 47.5 builds, but I think I heard someone mentlion that they forgot to include the actual code for the changing in 47.4 rel. Anyways: I'd suggest disabling it untill it's approved crash-proof. My box crashed during eeprom writing, and we've had some... problems making it boot again...

belive that was related to xbox being turned off during eeprom access... which isn't very...lucky.