Because official download is impossible (Canon does not release service tools to the public), you must rely on trusted community sources. Below are the safest methods.
This is the most critical step. You cannot open the tool normally; the printer must be in "Service Mode." download canon service tool v3600
Canon Service Tool v3600 is a specialized utility used to reset the "waste ink absorber" counter (Error Code 5B00) and perform maintenance on older Canon Pixma and MG-series printers. Important Warning Because official download is impossible (Canon does not