Canon Service Tool V5306 _verified_ -

This version (v5306) supports many Pixma series printers, but it generally does not work with "disposable" or entry-level models like the E400 series or MG24xx/MG25xx. Hardware Locking:

Note: Always verify compatibility before attempting to use the tool on a specific model to avoid firmware corruption. canon service tool v5306

This usually means the printer isn't in Service Mode or the driver isn't properly installed. This version (v5306) supports many Pixma series printers,