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HP DesignJet T770 . The printer will not start

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HP DesignJet T770
Hey. Faced a problem, the HP Designjet T770 printer stopped running. The indicators do not light up, the power to the printer is suitable.
In the instruction says the following:
HP Designjet T770 and T1200 Printer Series - The printer will not start
The printer will not start
If the printer will not start (the front panel is blank or the diagnostic LEDs are all off), you are recommended to replace the firmware, in the following way.

    Go to the Knowledge Center and download the firmware.
    Save the firmware on a USB flash drive. Ideally, the USB flash drive should be empty and formatted with the FAT filesystem.
    Ensure that the printer is turned off. Connect the USB flash drive to the printer's USB port, then turn the printer on.
    When prompted by the front panel, press the OK key.
    The printer takes the USB flash drive.
    The printer automatically installs the new firmware and restarts the printer.

However, I can not find this firmware anywhere. Help me please!
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Hi,  Thanks for contact with HP Support Forum.



Please follow the below instruction:


                Please download the below link file.


1st Steps:



Firmware Update Process:


2nd Steps:


  1. The Thumb Drive Plug-in with your computer/laptop.
  2. Format it your Thumb drive on FAT32 (Default)


3rd Steps:


  1. Printer Firmware send into Thumb Drive (Your downloaded file, on 1st steps file)
  2. Unplug the Thumb Drive from PC/Laptop


4th Steps:


  1. Plug in to with your Printer Font Panel or Printer Back side where have to on printer left site. At this printer should be turn off.
  2. Turn on the printer and wait some few minutes.
  3. After some time printer shows it “Update the firmware” on printer control panel.
  4. Click on “Update the Firmware” button on the touch control panel.
  5. After few minutes printer control panel shows it “Un plug your Thumb Drive”
  6. Just unplug in your thumb drive from Printer.
  7. Just wait few minutes for firmware update issue. (After few minutes printer will automatically restart)
  8. After initialized the printer, it automatically came to ready mode. (If raise the any other issue or error, please call to me for below cell no.)


N.B: While update the firmware, please do not turn off / interrupt the printer. So you need to use backup power like: UPS.



I hope that answers will support to concern adequately. Let me know! Good luck 

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