I went to the Epsom printer site and tried to download updated firm ware. now the printer is off line and the install didn't finish.
I got a friend with knowledge of Mac to talk me through. Knowledge is power.
often a local chum is useful at times like these; That it appeared to freeze during a firmware upgrade was a little worrying; as often a failed firmware upgrade "can" result in a dead printer or whatever... But not always as in your case...