While still holding the Stop/Reset button, press and hold down the Power button. The power LED light will turn green.
This happens if your printer's mainboard is already permanently locked (EEPROM corruption). This usually occurs if an incorrect or outdated version of the Service Tool was used previously. Safety and Environmental Disclaimer canon service tool v4718 verified
Ensure you are using a Windows PC connected directly via USB cable. Step 2: Enter Service Mode (Crucial Step) Turn off your printer (keep it plugged in). Hold down the . While holding Stop/Reset, hold down the Power button . While still holding the Stop/Reset button, press and