50 Warning box will be shown duringfirmware upgrade for network module. It is recommended not to do other workduring firmware upgrade for systemreliability. Please do not turn off a printer until theupgrade is completed.Figure 71 Upgrading the firmware 2 When firmware upgrade is completed,pop-up comes out for reboot. Pleaseclick “Yes”. It takes 1 minute to reboot. Please click “Refresh” after reboot.When proper printer shown, pleaseconnect printer by clicking “Connect”.Figure 72 Upgrading the firmware 3