Thanks quid, for the battery link.
What i did was creating a bootable, formatted SD card using CardTricks, then install the CHDK ver attached on your post. Locked the card, put on cam, turn on then i see CHDK interface immediately. Then I press Alt, Menu -> Raw parameters, create bin file, rename it to badpixel.bin, enabled DNG format and extension. When I take a picture, however, the camera just shut down right away. There has been only few pictures on my SD card.