I know this is an old post, but thought I'd add my findings in case someone comes across this post like I did looking for a solution. I was able to resolve this issue with my Pixma MG3620 following the instructions on this site: https://easyfixs.blogspot.com/2019/09/se...-tool-v3400.html This site is incredibly detailed and helpful for fixing a ton of different Canon models. I can't speak to the security or safety of this site or tool, so I would recommend downloading and installing this tool in a sandbox or on a computer that can be wiped, and on an isolated network if possible. All I know is that after 5+ hours of digging for solutions and being told "it's not possible", this tool had me screaming "hallelujah" in minutes. It's a little tricky to install, as the package downloads as a .rar file. I used 7-Zip to extract the files, and then again to extract the program. I would also recommend that you DEFINITELY do not run this tool without also cleaning your Ink Absorber pad(s). There's a reason these...