My 2 cents. I haven't read the entire thread but in my work I avoid printer firmware upgrades like the Covid if the printer is running properly. I don't trust the manufacturers and know they will slip into the firmware code that will prevent one from...
What benefit is there to installing a new firmware version? If a printer is printing properly, it might be best to stay with what works, I have several printers, one being an Epson office printer and when the firmware was updated it eliminated my abi...