Canon does publish Service Tools on public websites. Legitimate acquisition channels include:
Why do technicians still warn against casual use? Here are real-world failures: Software Canon Service Tool V.4906 Download
If you absolutely must use V.4906, run it on an offline air-gapped PC with a full backup, and only on a printer you are willing to lose. Your data security and your printer’s life are worth more than a free download. Canon does publish Service Tools on public websites
: This typically indicates that the printer was not correctly put into Service Mode or there is a communication issue via the USB port. Your data security and your printer’s life are
This article is for educational purposes. Unauthorized use of this tool voids your warranty and can permanently damage your printer.
He didn't celebrate yet. He scrolled down to the 'Test Print' section and clicked .