Sorry - that is not your camera's firmware version. Please read this - especially the paragraphs at the end of the section :
Link > How can I get the original firmware version number of my camera?
I strongly recommend using the
ACID utility linked at the top of that section.
Can i upgrade my cam to 1.0.0.c by P&S FW dumps of fe50? Can you show me how to upgrade it?
Unless Canon issues a firmware update release, you cannot change the firmware version. However, you probably don't need to.
Please read through this :
http://chdk.wikia.com/wiki/Prepare_your_SD_card I strongly recommend the
STICK utility linked at the top of that page.