Suddenly printer failed, tried to fix by uninstalling and reinstalling.   Will not connect to the system.   I see others with the problem and a solution to shut off wi-fi 5 ghz.   That option DOES NOT appear in settings, though I did another firmware upgrade. 1.2.5 Build.   This needs addressing!!!   Am really upset as now I have no printer installed and since this is a web based wi- fi printer I cannot even install it to work with cables!!!!   I need HELP!!!!