: To perform a clean "reset," always download the most recent version from the official manufacturer's site rather than using old installer disks.
Find official installers for your specific model at Canon USA Support or Canon Singapore . reset eos efi software link download
If the (the software used for image transfer and remote shooting) is crashing or failing to recognize your camera, a software reset via uninstallation and reinstallation is recommended. Uninstalling the Software : : To perform a clean "reset," always download