Download the tool (if you can find a legitimate source – see risks below).
Install and run the ServiceTool_V5204.exe as administrator.
Select your USB port from the dropdown menu. canon service tool v5204 upd download
Click "EEPROM" to read the printer’s current counter. You’ll see a value like "D=95.6" – that’s the percentage of waste ink capacity used.
Click "Reset Main" and then "Reset Waste Ink Counter". Download the tool (if you can find a
Turn the printer off and on normally. The error should clear.
Because the tool is pirated service-center software, there is no official help line. If you get an error like “Timeout” or “Wrong Region,” you’re on your own. Install and run the ServiceTool_V5204
Before you risk malware or a bricked printer, consider these legitimate options: