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EC6.3(.P817) Firmware Release Notes for E46x, X46x, T65x, X65x, C73x, X73x, W85x, and X86x Series Printers (August 2019)

Document ID:RE145

Usergroup :External
08/20/19 Properties  


Affected Products:

Click Properties in the title section above.

READ THIS FIRST: Special notes and considerations

NOTE: Individual firmware packages may also provide updated engine code. Lexmark periodically releases updated printer and MFP software in order to address end-user issues and provide new performance and feature enhancements.

Upgrade guidelines:

  • This firmware release is intended for customers with current firmware versions Ly.xx.P816 or older (releases where the 3 digits after “P” are equal to or less than 816)
  • If the current firmware on the device is Ly.xx.P818 or newer (releases where the 3 digits after “P” are equal to or greater than 818), do NOT update to this release.

E46x models:

  • If your device is an E46x model using firmware LR.LBH.P799 or older (numbers lower than 799), an intermediate firmware update may be required.
  • If the firmware update to LR.LBH.P817 fails, please contact the Technical Support Center (TSC) to get the intermediate firmware, LR.LBH.P764.

Other models:

  • If the device firmware is not found on, contact TSC to receive the firmware


  • Release notes list the improvements and fixes provided by this update.
  • Release notes provide additional update methods and assistance.
  • DLE-equipped printer update recommendations
  • General precautions associated with this printer firmware release
  • Click here for more information regarding .P413c revision only.

Firmware EC6.3 release notes (Ly.xx.P817):

Product specific information, firmware download, history and update instructions:

Printer model New code level Firmware and update instructions
Mono Single Function Devices
E46x Series

Firmware EC6.3.817

  • base=LR.LBH.P817
  • engine=AL.LB.E302

File Name:

Click Here
T650, T652, T654

Contact Lexmark Technical Support

W85x Series

Firmware EC6.3.817

  • base=LP.JB.P817

File Name:

Click Here
Mono Multi-function Devices
X46x Series

Firmware EC6.3.817

  • base=LR.BS.P817
  • EC2.0 engine=AR.BS.E201
  • EC1.0 scanner=AR.BS.S010

File Name:

Click Here
X65x Series

Firmware EC6.3.817

  • base=LR.MN.P817
  • EC2.1.220 engine=AR.JP.E220.ppctgmne

File Name:

Click Here
X86x Series

Firmware EC6.3.817

  • base=LP.SP.P817

File Name:

Click Here
Color Single Function Devices
C73x Series

Firmware EC6.3.817

  • base=LR.SK.P817
  • EC1 engine=LR.SK.E117

File Name:

Click Here
Color Multi-function Devices
X73x Series

Firmware EC6.3.817

  • base=LR.FL.P817
  • EC1 engine=LR.SK.E117

File Name:

Click Here

Included in the firmware download package:

  • .fls file required for non-Windows environments or non-standard connection methods
  • Additional Release Notes



Base firmware EC6.3, Ly.xx.P817, for the following devices (changes since EC6.2, Ly.xx.P631g)

New features:

  • Changes in Ly.xx.P631j/k

    • Added support for SMBv2 and SMBv3
      • Please see KB article # FA1227 for the instructions on how to enable SMBv3
    • Added support for TLSv1.1 and TLSv1.2
    • Updated open SSL to version 1.0.2

Security Issues Addressed:

  • Changes in Ly.xx.P817
    • SNMP Denial of Service Vulnerability - CVE-2019-9931
    • Lexmark Overflow Vulnerabilities
      • CVE-2019-9930
      • CVE-2019-9932
      • CVE-2019-9933
    • Account Lockout - CVE-2019-10058
    • Information Disclosure via finger service - CVE-2019-10059
    • Shortcut Integrity vulnerability - CVE-2019-6489
    • Directory Traversal Vulnerability - CVE-2018-18894
    • Lexmark Buffer Overflow Vulnerability - CVE-2018-15519
  • Changes in Ly.xx.P631j/k
    • Orpheus' Lyre Vulnerability – CVE-2017-11103
    • Logjam Vulnerability in Diffie-Hellman Key Exchange – CVE-2015-4000
    • FREAK: Factoring Attack on RSA-Export Vulnerability – CVE-2015-0204
    • GHOST Glibc Buffer Overflow Vulnerability – CVE-2015-0235
    • POODLE Vulnerability – CVE-2014-3566
    • Multiple OpenSSL Vulnerabilities
      • CVE-2014-0224
      • CVE-2014-0198
      • CVE-2010-5298
      • CVE-2014-3470
      • CVE-2014-0076

Field Issues Addressed and Other Improvements:

  • Changes in Ly.xx.P817
    • Fix for a crash that occurs when attempting to access print release on certain
      devices running Ly.xx.P631j/k or Ly.xx.P8zz firmware
  • Changes in Ly.xx.P631k
    • Fix for an issue where the printer becomes stuck in a Busy state and cannot flash
      firmware after printing IPDS duplex jobs


Still Need Help?

Have the following available when calling Lexmark Technical Support;

  • Printer model(s)
  • Printer serial number
  • Application


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