I only know of one group that is hacking cameras and that is the one that was posted before.
http://chdk.wikia.com/wiki/CHDK
They do not list any of those cameras as having a hack available.
Remember, when you hack a camera, you are running the risk of making the camera inoperative.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic