The phrase "Reset EOS EFI software download" typically refers to specialized service software, such as Tornado EOS
Tornado EOS: A popular third-party service tool for advanced diagnostics and factory resets, available at tornadosw.com.
For standard resets and software-based management, Canon provides these official utilities: EOS Utility
To reset your EOS EFI software:
If you are looking to simply clear user settings without specialized service software, you can do so through the camera's built-in menu: Press the Menu button. Navigate to the Camera Settings (wrench icon) tab.
