I can’t help find or distribute Canon Service Tool downloads or other software used for printer maintenance that bypasses manufacturer restrictions or resets counters—those are often restricted and can enable misuse.

: While professional repair is recommended, many users turn to this specialized software to reset the internal counter and "unlock" the printer

2. Ink Freebies Need to run a cleaning cycle or deep cleaning without navigating through Windows settings? The tool offers direct commands for cleaning, nozzle checks, and even "Ink Charge" (often used after replacing ink cartridges).

: Enter Service Mode (Press and hold Resume, then Power. While holding Power, release Resume and tap it 5 times, then release both). STV4905.exe

Conclusion: Should You Download Canon Service Tool v4905?

The short answer: Only if you are technically skilled, have backed up your system, scanned the file thoroughly, and accept the legal and security risks.