The Powershot A490.


CHDK is available as beta version for the Powershot A490 with firmware 1.00F from the Autobuild Server.

The <Alt> key for the A490 is the PLAY button (short / long press).


Technical Data

  • Digic III image processor
  • DryOS operating system

Firmware info

The ver.req file method could be used to gather firmware information about this camera model.

Ver.req First Page Data:

  • To get the fw version, CameraVersion or the ACID tool can be used to extract the fw version from an image file taken by the camera.

CHDK Specialties

This section describes special CHDK-related things...

  • The <Alt> key for the A490 is the PLAY button (short / long press)

For Developers

General info:

LED addresses

0xC0220088 Green state LED
0xC0220080 AF LED

Available firmware dumps


Download location for firmware dumps:
P&S firmware dumps mirror

Porting process & links

  • Please report issues with the A490 or ask development related questions here: A490 porting thread

History & News on A490:

  • (05-Jan-2010) Canon press release of new camera