Hello I bought a 17" Powerbook off Ebay and the backlight keyboard worked, I remember well. I downloaded a bunch of updates and I recall one was a firmware update. Wether related or not, it no longer works! I really need this to work becausae I frequent darker places than normal. I do not even see any option anywhere to mess with a backlight keyboard 9and I got this without any software). Does anyone have any advice?