i have managed to load the CHDK sent by nafraf with the bootable SD card method.
so far still testing it.
while in recording mode, when i load the CHDK by pressing the replay key..
the CHDK menu come out, but will get interrupt by the focus frame of the camera.
other than that, still fiddling with it.
there's no aperture control on the CHDK.
i want to try long exposure but can't control aperture size...