The following error has been reported several times but there doesn't appear to have been a recognisable fix published. I note from one of the previous complainants that the issue had been forwarded to an HP team for resolution but still nothing.....
The issue is an error message on the LCD front panel which suggests 'A problem has occurred with one of the printer's critical system files. A printer update will be installed to fix this problem'.
There is no way to communicate with the device for this so called update to occur. As the previous complainant suggested 'the printer is completely unresponsive to ANY inputs on its touchpad. I've tried connecting it to a Win10 computer directly via USB, it is not recognized by the computer. There is virtually NO way to do anything, and clearly no way to update the indicated software (presumably the Firmware).
I have tried the obvious, deleting the printer and any driver or software references on the system, downloading the driver etc. but nothing appears to work.