If you encounter issues during the firmware update process:
Best Practices for Firmware Updates in HP DesignJet Large-Format Printers: Process, Risks, and Post-Update Validation hp designjet firmware update
The team leader, Rachel, suspected that the printer's firmware might be the culprit. She had heard that HP had released a new firmware update for the DesignJet, which promised to resolve various issues and improve overall performance. Rachel decided it was time to update the firmware. If you encounter issues during the firmware update
| | Cause | Recovery | |-------------|-----------|---------------| | Printer stuck on “Updating” > 30 min | Corrupted file / power dip | Perform power-on reset: unplug 1 min, plug back; reflash via USB | | “Firmware mismatch” error | Wrong model firmware | Download correct file using printer model number | | Network lost after update | DHCP reset to default | Reconfigure IP via front panel: Setup → Connectivity | | Printhead errors after update | Firmware changed voltage tables | Remove/reseat printheads; run automatic alignment | run automatic alignment |