Please make sure that your computer system is Microsoft official version. CAN NOT be update on MAC system! turn off the computer antivirus software before download the update software.
Hold any button down on scanner,then plug into USB of your laptop or desktop.
Wait for UPDATE MODE to appear on scanner screen to then let up on any device button.
Open up file compressed zip file on your computer, you will see the interface of "upgrade" and "print" just as the attachment i sent,then click updating.
Scanner will notify with message when firmware has been successfully updated.