You can download this firmware Version 1.0.4 at Canon USA.
Firmware Version 1.0.4 incorporates the following fixes and improvements:
- Fixes a phenomenon in which a red-colored area may appear at the bottom-center of a captured image when shooting in bulb mode or during a long exposure.
- Fixes a phenomenon in which the autofocus may not respond when the autofocus is initiated via pressing the shutter button, the AF-ON button or the AE lock button when configured in the custom control menu.
- Enhances the reliability of communications between the camera and SD card.
- Fixes incorrect wording on the Finnish language menu screen.