From printer repair forums and technician communities:
While it is highly sought after by users facing the (Waste Ink Counter Full), you should be aware that Canon does not officially distribute this software to the general public. Essential Guide to Canon Service Tool 5306 What Does the Tool Do? The 5306 version is often used for: Canon Service Tool 5306 Download
The Canon Service Tool (version 5306) is a low-level utility designed to: From printer repair forums and technician communities: While
Press the button 5 or 6 times (depending on the model) while still holding Power. Canon Service Tool 5306 Download