Maybe the reason why I couldnt do it is because I didnt do it for single cartridges but when all cartridges was empty, I will try again as you explained
Another thins is that you mentioned that you keep your PRO1 24/7 in standby mode. I try last two days to leave it open but it is shutting down automatically by itself. Do you make anything special to put it into standby mode other then just not turning it off?
I see that you are already using PRO1 for a couple of years, mine is only a 3 months old and I started to believe that CANON engineers follow your posts and they are making some changes to defend new PRO1s against your tricks
Another thins is that you mentioned that you keep your PRO1 24/7 in standby mode. I try last two days to leave it open but it is shutting down automatically by itself. Do you make anything special to put it into standby mode other then just not turning it off?
I see that you are already using PRO1 for a couple of years, mine is only a 3 months old and I started to believe that CANON engineers follow your posts and they are making some changes to defend new PRO1s against your tricks

I am back, I made around 30 A4 prints and suddenly my matte black depleted .. but it immediately go redX even before !warning sign. It was like 3/4, 4/5 or something. But I think I managed to disable the ink monitoring system ... I dont know how I did it because it looked like "keeping pressing for 5 sec. when the first ink depleted error occure" technique didnt work at the beginning. But later I did something that I dont know and now it is continuing to print with this message: 