I wish for the Powershot A495 to be supported, and I've tried to take steps to help the developers (for I am not one), such as finding version information and such. The ver.req and vers.req do not work. Version.req does not either. I tried pressing funcset + down as recommended for another camera and nothing happened. I also tried using the NewDryOS dumper. It did freeze the camera, but the empty.dum was empty when I string-tested it. I also tried the DryOS dumper. I did not try VxWorks because the camera is a new model.
I also tried getting another CHDK for an extremely similar camera to work, the A480 firmware. The A480 has a virtually identical button layout, body, and processor, so I thought maybe it would work. I got a "Firm Update" option in the menu, but it immediately gave an error, probably because of some sort of checksum or model code built into the firmware file.
I was able to retrieve some info from the camera by using the CameraVersion tool:
camera: Unknown (0x2800000) version 100 D
Canon Firmware Version: Firmware Version 1.00
Canon Model Id: Unknown (0x2800000)
Firmware Revision: 1.00 rev 4.00