The tool is designed to work with specific Canon printer models and is not compatible with all printers.
: If your printer's Service Mode is locked or damaged (often due to using multiple fake resetters), the software tool will not work, and the EEPROM may need a physical hardware reset.
Older versions of the service tool (v3400 or below) can corrupt the EEPROM if you press the wrong button. Never press unless you know exactly what you are doing. This wipes your printer’s unique ID, region settings, and USB vendor ID.
I can provide more specific instructions for your exact model.
