Find your printer’s by tapping the "Information" or "Ethernet" icon on the control panel.
HP generally discourages downgrading, but it is possible via the method. hp mfp 586 firmware
Before updating, you must know what you are running. To check the current firmware on your HP MFP 586: Find your printer’s by tapping the "Information" or
If updating via Windows and the printer isn't appearing, use a temporary USB cable connection to refresh the status. hp mfp 586 firmware