Are there any alternative methods or professional services available for Canon G3000 5B00 error reset if the manual button method fails?

If the manual button method fails to clear the 5B00 error on your Canon G3000, the primary alternative is to seek professional service. A Canon authorized service center or a reputable printer repair shop will have access to the official Canon Service Tool software, which can reliably reset the waste ink counter. They can also inspect the printer for any underlying hardware issues, replace the waste ink absorber pad if needed, and ensure the printer is functioning correctly. Contacting Canon customer support for guidance is also a viable first step.