Use hp web jetadmin to upgrade the firmware, Use ms-dos commands to upgrade the firmware, Use the hp jetdirect firmware – HP Color LaserJet CM4730 Multifunction Printer series User Manual
Use hp web jetadmin to upgrade the firmware, Use ms-dos commands to upgrade the firmware, Use the hp jetdirect firmware | HP Color LaserJet CM4730 Multifunction Printer series User Manual | Page 220 / 370