I tried both firmware. My camera can't even power up at all with both the firmware. When i remove the files in the card, my camera works like normal again.
Ok, so you should make a firmware dump of your 1.00C firmware, this will be needed to port CHDK to your fw version.
Use
Cardtricks with an empty SD card (max. 2GB size !), select your card, press the
NewDryOS button, read all the messages carefully & follow them.
Lock the card (important !), insert it & start up the camera - you'll see NO activity, just wait 30 seconds, then remove the batteries & the card.
Insert the card in your card reader, start Cardtricks again, select your card & press
Strings.
Now you should see some strings from the firmware; close the window, click
Clean in Cardtricks, then store the cleaned dump on your hard disk.
Zip this file and upload it somewhere, e.g. at a free file hoster like
zSHARE - Free Image, Video, Audio, Flash and File Hosting - then post the link to the firmware dump on this thread here in the forum:
[DOWNLOAD LINKS] Firmware dumps available.