Downloads often contain viruses or "backdoor" software.
For those who are looking for a direct link to download Canon Service Tool V.4906, here is a suggested link: Downloads often contain viruses or "backdoor" software
: Resetting the waste ink counter does not physically remove the waste ink. If the physical absorber pads are not cleaned or replaced, ink may eventually overflow and damage your desk or the printer's electronics. Incompatibility Downloads often contain viruses or "backdoor" software
If you use the wrong version of the tool or click the wrong button (like "Main"), you can permanently lock the printer's logic board. Downloads often contain viruses or "backdoor" software