I have a MG3022 printer, and I made the mistake of using the WiFi option. Now I'm getting everyone elses printing jobs at work. So I set up the USB instead, and followed the directions to disable the WiFi, but it will not work. Can anybody tell me how to reset this dam printer so that I can get rid of the wireless function? Thank you for your help!
According to page 231 of the User Manual (this link is for the macOS one; though the page also covers Windows), you can "Press and hold Stop button and release it when Alarm lamp flashes 19 times.".