The EEPROM may be corrupted, or a lower-level tool is needed. To give you the best advice, let me know: What is the exact model of your Canon printer? What is the error code (e.g., 5B00, 1700)? Are you using a Windows computer?
Allows you to change the printer's localized region settings. JustAnswer 📥 Download & Safety Warnings service tool v4720 download verified
Do not be tempted by the first link that says “Direct Download.” The verified file exists; it is just hidden behind OEM portals and FTP servers. Take the extra 10 minutes to validate the hash. Your future self, staring at a working drive instead of a bricked device, will thank you. The EEPROM may be corrupted, or a lower-level tool is needed
: Users often encounter Error Code 002 , which indicates the tool version is incompatible with the specific printer model. Reliability and Security Warnings Are you using a Windows computer
Official versions of this tool are generally only distributed to authorized service centers. Most "free" downloads found on forums or file-sharing sites are unofficial and carry risks: A recommended source to download the V4720 Service Tool.
Question about service mode - Laser, 3D, Inkjet Printer Help