This has led thousands of users to search for the same magic phrase:

The ST 5510 is a service-mode utility program used by technicians to manage Canon inkjet printers. Key capabilities include: Waste Ink Reset

: Many free downloads are reported as non-functional or malware-infected. Using a fake tool can permanently lock your printer into an error state (Error 006), making even legitimate tools unusable later.

If the software shows "Error Code 006," it usually means the printer is not in Service Mode or the driver is not properly installed. If you see "Error Code 002," the specific function you are trying to run is not supported by your particular printer model.