Use only if you have exhausted official support, accept the voided warranty, and have a backup printer ready. Disclaimer: This article is for educational purposes only. The author and publisher are not responsible for any damage to your printer, data loss, or malware infections resulting from downloading or using third-party software. Always back up your system and exercise caution.
If you decide to download the V5103 tool, treat it like a hazardous material: verify the source, scan for viruses, run it on an isolated machine, and—most importantly—physically address the waste ink problem after resetting the counter. Canon Service Tool V5103 Download
The official solution from Canon is to take the printer to an authorized service center, which often costs nearly as much as a new printer. However, advanced users and repair technicians have a secret weapon: . Use only if you have exhausted official support,