Support article for Lexmark MS821
IMPORTANT: To enhance device security, firmware downgrade is no longer allowed beginning with firmware versions xxxxx.230.001 and LW90.xx.P001. If you have questions about this, please contact Lexmark Technical Support for further assistance.
Downgrading or reverting firmware levels is not advised. Many reasons exist, for example:
Downgrading firmware from FW4... | To a lower level, such as FW3... | Results in... |
---|---|---|
CXTPP.040.072a | PP.03x.yyy |
|
Warning—Potential Damage: Do not downgrade firmware, since returning the device's full compliment of features and functionality requires a multi-step process and likely requires contacting the solutions support team.
Downgrading firmware
If necessary, and only as a last resort, if you are required to downgrade firmware, then you must follow this prelist and summary of steps to recover existing solution (apps) and configuration settings.
Before you begin
Create a list of all apps that are not pre-installed at the factory.
Capture all configuration settings for apps, e-mail, fax, copy, print, network, and security functions.
Capture all user-defined shortcuts, profiles, and destinations.
Downgrade firmware to the previous EC revision of firmware.
Clear cache in the browser used to access the printer Embedded Web Server (EWS) page.
After the printer returns to a ‘Ready’ state, access the printer EWS; for example, http://printer's_IP_address.
Navigate to Device > Maintenance.
Select the following under Erase Printer Memory options:
Click Start.
Reinstalling and activating apps
Upon completion, follow the steps in the setup wizard. Reacquire and reinstall all lost apps, licenses, certificates, and re-configure all user-defined settings.
Note: You need apps specific to your code level since apps are code-level dependent.
Firmware level | Settings page (Base) | Description |
---|---|---|
Firmware 4‑8 | CXTPP.073.042a | Offers better delineation of models:
|
Firmware 3 (FW3) | PP. 03x.yyy |
|
Reports > Device > Device Information for CXTZJ.076.301
Base code level can also be found at EWS > Status.
LEGACY ID: SO8017
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