The (also known as ST4905) is a proprietary, unofficial software application designed to communicate with your Canon printer’s service mode. It is a variant of the popular "Service Tool" series (versions v3400, v3600, v4700, and v4905).
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Canon Service Tool v4905 is a specialized utility used to reset the "Waste Ink Absorber" counter (error 5B00) and perform maintenance on a wide range of Canon Pixma printers. Compatible Printer Series canon service tool 4905
You can legally download the tool from various tech forums (e.g., BadCaps, PrinterKnowledge) or GitHub repositories that reverse-engineered the protocol. Always scan downloaded .exe files with antivirus software—some repackaged versions contain malware. The (also known as ST4905) is a proprietary,
