Last Updated
   EC5.0 'Base(.P543) and Engine(.E618)' Firmware 'Release Notes' and 'Firmware Availability' for the Lexmark MX610, MX611 and XM3150 (April 2015) 04/22/15         
   EC5.0 'Base(P454) and Engine (.E709)' Firmware Release Notes and Firmware Availability for the Lexmark MX71x, MX81x, XM5163, XM5170, XM7155, X7163, and XM7170 MFPs (April '15) 04/22/15         
   EC5.0 'Base=.P543, Engine=.E501' Firmware Release Notes and Firmware Availability for the Lexmark CX310, CX410, and CX510 MFPs (April 2015) 04/22/15         
   EC5.0 'Base=.P543, Engine=.E501' Firmware Release Notes and Firmware Availability for the Lexmark CS510 and C2132 (April 2015) 04/22/15         
   A 456.84 Paper Jam Appears on a Lexmark MX81x with Finisher Installed 04/22/15         
   Print Jobs Are Intermittently Assigned to a Different User when Using Print and Hold 04/22/15         
   Technical Service Bulletin – Recommended (LW50.xx.543) Firmware Update for MS, MX, CS, CX, M, XM, XC Series Printers (April 2015) 04/22/15         
   EC5.0 'Base = .P543, Engine = .E618' Firmware Release Notes and Firmware Availability for the Lexmark MS510, MS610, M1145, and M3150dn (April '15) 04/21/15         
   Lexmark MS71x, MS81x, MX71x, & MX81x – Troubleshooting 24x.42 Paper Jams 04/21/15         
   Printer Remains at ‘Please Wait’ State when Faxing with BadgeAuth Enabled 04/21/15