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EC6.0 Firmware Release Notes for the Lexmark X548, C & X746(8), C & X792, C & X925, and C & X95(0,2,4) Series Lexmark Printers – March 2018

Document ID:RE201

Usergroup :External
03/22/18 Properties  


Lexmark firmware updates (March 2018)



Why upgrade firmware?

  • Improve printer performance and efficiency
  • Enhance printer capabilities with new or updated features
  • Resolve firmware or hardware issues
  • Enhance device compatibility with newly introduced operating systems, software, and printing applications


Firmware availability

  1. Identify your printer model below.
  2. Download the correct firmware download package.
  3. Extract the firmware (.zip) package. 
  4. If unable to access the embedded web server to use the Update Firmware feature, then see .FLS Firmware Flash Methods below.
    Model Download Firmware New Code Level Engine Code
     X548 Click here LHS60.VK.P617  LHS60.VK.E600*
     C746 Click here LHS60.CM2.P617 LHSC.CM.E251
     C748 Click here LHS60.CM4.P617


     X74x Click here LHS60.NY.P617 LHSC.CM.E251
     C792 Click here LHS60.HC.P617 LHS60.HC.E600*
     X792 Click here LHS60.MR.P617 LHS60.HC.E600*
     C925 Click here LHS60.HV.P617  
      See Menus Settings page under Device Information.
     X925 Click here LHS60.HK.P617
     C950 Click here LHS60.TP.P618
     X950, X952, X954 Click here LHS60.TQ.P618
    equipped printers
    Click here  LHS60.JR.P617

    NOTE: See section below on how to determine your current printer code levels. 

*These printer models require EC6 engine code to properly function with EC6 base code. Thereafter, any further updates will require a base code of LHS6x.xx.P615, or later.

  • X548 – LHS60.VK.E600
  • C79x and X79x   LHS60.HC.E600


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Recovering from a code mismatch (X548, C792, X792)


 In the event that you update the printer using an EC6 base-only firmware (.fls) file, and EC6 engine code was not already installed, you may see missing menus and reports, or broken functions and unexpected printer crashes.

What to do?

Resend (flash) a previous EC (Base/RIP) code level known to be compatible with the engine code.

To do this:

    • If the printer is not already in "Invalid Engine" mode, press and hold down the 3, 6, and 4 number-pad buttons while concurrently powering on the printer.

    • Release the buttons when "Invalid Engine" displays on the control panel. 

    • Resend the previous EC-level firmware, or send an EC6 combo-file that contains both base/RIP and engine code.


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Firmware .P617 and .P618 (EC 6.0) release notes (March '18)


Changes since EC 4.1/4.2 (EC 4.1/4.2 to EC 6.0) 

Functional enhancements:

Added support for SMBv2 and SMBv3  (See article ID# FA1227 for instructions on how to enable SMBv3.)

Added support for TLSv1.1 and TLSv1.2 


 Updated MFP Pre-installed Apps:

Scan to Network version 4.5.14

Forms and Favorites version 4.2.0

Remote Operator Panel version 3.3.2

WS-Scan version 3.3.2

USB My MFP version 3.3.2 


Updated SFP Pre-installed Apps:

Background and Idle Screen  3.11.0

Forms and Favorites version 3.2.0

Remote Operator Panel version 3.3.2

Eco-Setting 3.0.11

Showroom 2.5.1 


Security updates:

CVE-2014-3566 (POODLE SSLv3 vulnerability)

CVE-2015-0235 (GHOST glibc vulnerability)

CVE-2015-0204 (FREAK OpenSSL vulnerability)

CVE-2015-4000 (Logjam OpenSSL vulnerability)

CVE-2016-2183 (Sweet32 DES/triple DES cipher vulnerability)

CVE-2017-11103 (Orpheus' Lyre Heimdal Kerberos vulnerability) 


Field Issues, Fixes and Other Improvements:

Update java certificates for Remote Operator Panel and Scan Profile applets

Change Auto Continue default value from 0 (disabled) to 5 seconds

Fix various print output issues

Fix various 900.xx Firmware Errors from PCL5/PCL-XL/PS/PDF print jobs 

Added DLE support EC6.0

Translations changes


Engine code:

Lexmark X548 : LHS60.VK.E600 (Required for .P615, or greater)

Lexmark C792/X792 : LHS60.HC.E600 (Required for .P615, or greater)

Lexmark C74x/X74x : LHSC.CM.E251 


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.FLS firmware flash methods


Firmware Flash Methods (.fls file extensions) Information Recommended Use
Embedded Web Server (EWS Open your internet browser and enter the IP address of the printer. Select Settings > Update Firmware. You have network access to the printer's embedded Web server
USB utility Click here for example. Seldom used, but a good alternative flash method for USB-attached printers
USB thumb drive Click here for example. A standalone printer  without computer access
FTP Click here for detailed steps. No HTTP (EWS) access and no access to a Microsoft Windows-based computer
Markvision Enterprise Visit the Markvision website to download the latest User's Guide and perform a search on Print Server updates or Generic File downloads. Large printer fleets
Printer File Loader
Click here for detailed steps. Macintosh users


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How to check your current printer firmware levels

Obtain the Menu Settings page or access the printer's embedded web server (EWS) for this purpose.  

Option 1: Via the printer's Control Panel > Menu Settings Page

Step Action
1 Press the Menu button on the Control Panel.
2 Select or touch Reports.
3 Select or touch Menu Settings Page to start printing.
4 Look for the code level under “Device Information” and next to Base and Engine.


Option 2: Via the printer's Embedded Web Server (EWS)

Step Action
1 Launch your Internet browser application.
2 After http://, enter the printer's IP address.
3 Click on Reports.
4 Click on Device Information and locate the values next to Base and Engine.



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Still need help?

If you need additional assistance, please go to the Lexmark support site, type your printer model and locate Get in Touch with Lexmark! for contact information. NOTE: When calling for support, you will need the following:

  • Name and version of the solution
  • Affected printer model/s
  • Printer serial number

Please be near the product/s described in this article to expedite the support process and reduce callbacks. 

Please enter the email address you would like to send a copy of this page to.