Same result here:
fn+light down = scan code: 0x97 key code: kbdillumdown fn +light uo = scan code: 0x96 key code: kbdillumup
Same result here:
fn+light down = scan code: 0x97 key code: kbdillumdown
fn +light uo = scan code: 0x96 key code: kbdillumup