This usually happens if the printer is not properly in Service Mode, or if you opened the software before plugging in the USB cable. Close the tool, power cycle the printer, restart Service Mode, and try again. Error Code 002
The Canon Service Tool V3800 is an official-grade maintenance software used by technicians to communicate with the printer's firmware. The version is highly favored because it requires no installation. You can run it directly from a USB flash drive or any folder on your PC, making it a lightweight and efficient troubleshooting companion. Why Do You Need It? canon service tool v3800 portable
Help you find a if you're getting an error 006 or 005. This usually happens if the printer is not
Download the tool, right-click the .exe file, and select "Run as Administrator." The version is highly favored because it requires
You need a newer version of the tool (e.g., V4905 or V5100). USB communication failure.