Canon Service Tool V4905 2021 Download Verified May 2026

| Feature | Verified File | Fake/Malicious File | | :--- | :--- | :--- | | File Size | Exactly 1,482 KB (approx) | 500 KB or 10 MB+ | | Digital Signature | Signed by "Canon Inc." (if checked) | Unsigned or fake signature | | Antivirus Scan (VirusTotal) | 0/60 detections | 15+/60 detections | | File Name | ST4905.exe or Tool_V4905.exe | Canon_Tool_2021_Free.exe | | Requires Installer | No – Portable EXE | Yes – Setup wizard (installs bloatware) |

If you are paranoid about malware:

Occasionally, a technician uploads the original CD image (.iso) from Canon. Look for a file named Canon_Service_Tool_V4905_2021.iso. Mount the ISO. The contained ST4905.exe is usually untouched. canon service tool v4905 2021 download verified