HP DesignJet Series - Emergency Firmware Upgrade Procedure

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System Error Codes
HP Designjet Ultra Low End Printer Service Manual
Emergency Firmware Upgrade
1 Unplug the power cord from the printer and wait a few seconds.
2 Press and hold the Cancel (red) button while plugging in the power cord.
3 The printer will initialize in emergency mode (the front panel will display just
the arrow icon).
4 Connect the printer to the computer with a parallel cable.
5 Send the firmware file through the parallel port from the DOS command
prompt. Type: copy /b firmware_file lpt1: and then press ENTER.
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