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HP LaserJet Printers and Multifunction Devices - How to Disable Remote Firmware Upgrades
Description
The firmware upgrade operation updates or replaces device operating system code on HP printers and multi-function devices, and is commonly referred to as a “remote firmware update�? (RFU). The Remote Firmware Upgrade setting determines if the firmware update process is allowed to be performed.
RFU Update Configuration Best Practices
Performing a Remote Firmware Update (RFU) is typically the responsibility of an administrator within an organization. For security reasons, RFU is an option that should only be enabled when new firmware is being loaded. RFU should be disabled at all other times.
Updating the RFU Setting
There are multiple methods to configure the RFU option. The setting can be configured for multiple devices simultaneously using the HP Web Jetadmin (WJA) fleet management tool. Devices can also be configured individually through a web page, however some older HP Printers require HP Web Jetadmin. Some low-end printers manipulate the setting from the control panel menu.
HP Web Jetadmin Method
To disable the RFU setting from Web Jetadmin
Select Device(s)
.
Select the Config
tab.
Expand Security
section and select Printer Firmware Update
.
Select the Checkbox
and select the Disable
radio button.
Select Apply
, and follow the dialog prompts.
Figure 1: Disabling the RFU setting from Web Jetadmin
Embedded Web Server (EWS) Method
To disable the RFU setting from the EWS
Open the EWS configuration
interface by entering the device IP address in a web browser.
Figure 2: Entering the device IP address
Select the Settings
tab.
Select Security
menu.
Select Configure Security Settings
button.
Figure 3: Security menu options
Uncheck the Remote Firmware Upgrade
checkbox.
Select Apply
.
Figure 4: Disabling the RFU setting from EWS
Control Panel Methods
There are several Control Panel configurations that support configuring the Remote Firmware Upgrade settings.
Products with a color touch screen, two line LCD display or graphical LCD
Select Setup
menu.
Select Service
.
Select RFU
.
ON
– allows a firmware update to be downloaded to the printer
OFF
– refuses firmware updates (can be changed to ON
from within the firmware update utility)
OFF AND LOCKED
– refuses firmware updates (can only be changed to ON
from the product control panel)
Products without a display
HP LaserJet P2035:
Press the Cancel
button for 10 seconds to enter the RFU enable/disable mode.
(The printer flashes the Ready, Attention, and Go LED’s.)
(The remaining 3 LEDs indicate the current RFU state.)
Press the Go
button to cycle through the 4 possible RFU states. Pressing the Go
button will cause the printer to move to the next state. The below LEDs signal the current state:
If the Paper Out LED is illuminated, RFU is enabled.
If the Toner Low LED is illuminated, RFU is disabled.
If the Paper Jam LED is illuminated, RFU is locked.
If none of the above LEDs are illuminated, the printer is in cancel mode.
Exiting RFU enable/disable will return the printer to its previously saved configuration.
Press the Cancel
button once to save the current RFU setting.
HP LaserJet Pro CP1025nw:
Hold the Go
and Yellow
buttons for 10 seconds.
(The Ready and Attention LED’s start to blink.)
Release the Go
and Yellow
buttons.
The below LEDs signal the current state:
If the Magenta LED is illuminated, RFU is enabled.
If the Cyan LED is illuminated, RFU is disabled.
If the Black LED is illuminated, RFU is locked.
Press the corresponding toner button for the desired setting.
Press the Go
/Cancel
button again to save changes.
HP LaserJet P1500n:
Press the Cancel
button for 10 seconds to enter the RFU enable/disable mode.
(The printer flashing the GO (first) LED.)
(The current RFU mode LED will be illuminated (see below).)
Press the Go
button to cycle through the 4 possible RFU states. Pressing the Go
button will cause the printer to move to the next state. The below LEDs signal the current state:
If the Ready LED is illuminated, RFU is enabled.
If the Attention LED is illuminated, RFU is disabled.
If the Toner LED is illuminated, RFU is locked.
If none of the above LEDs are illuminated, the printer is in cancel mode. Exiting RFU enable/disable will return the printer to its previously saved configuration.
Press the Cancel
button once to save the current RFU setting.
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