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Lexmark MX331

Lexmark MX331

Firmware upgrade reminders

IMPORTANT!

If using Scan Center with a non-default value (default = “-1”) for the UCF settings de_network_fwCompatibilityLevel*, users must review the following Knowledge Base article before upgrading to this release (this is not common):

Upgrading firmware

Note:  Always evaluate the firmware update on one device in the customer-specific ecosystem and verify functionality before proceeding to update a fleet of devices

  • Any device running xxxBL.061.001 - xxxBL.061.999 must first update to a FW7-based release such as xxxBL.076.308 before upgrading to xxxBL.081.015 or newer. Failure to do so can result in a device that will not power up to a “ready” state.
  • Any device running FW5.1 or older (xxxxx.051.yyy or smaller numbers) must first update to a FW7-based release such as xxxxx.076.308 before upgrading to xxxxx.081.015 or newer.
  • CS72x/CX72x Series devices and their equivalents running ATL.03x.yyy or ATL.02x.yyy firmware must first update to CSTAT.041.090 or CXTAT.041.090 as an initial intermediate release before updating to a FW7-based release, such as xxxxx.076.308, and then finally updating to xxxxx.081.015 or newer.
  • Contact Lexmark Technical Support to obtain intermediate releases if needed.

Downgrading firmware

  • Firmware downgrade is no longer supported, if there is a reason firmware downgrade is required, please contact Lexmark Technical Support and refer to KB topic SO8017
  • Downgrading firmware can result in exposure to known security vulnerabilities and will result in the loss of Apps, Security Features, and Settings
  • Ensure the firmware you download is the correct one for the product you have

Additional reminders

  • Check the device's current firmware level. Refer to “Checking the latest Lexmark printer firmware.”
  • Check the device's current firmware level.
  • If you are aware of any firmware installed on the device that is not standard, please contact Lexmark Support to receive additional firmware update instructions.
  • Review the release notes before making the decision to update firmware.

Format nomenclature change

  • Beginning with FW4, firmware versions are named in the pattern ABCDD.xxy.zzz where:
    • A tells whether the printer is Mono or Color (M = mono, C = color)
    • B tells whether the printer is Single or Multi function (S = single function printer (SFP), X = multi function printer (MFP))
    • C tells whether the UI is a touch screen or non-eSF or “lite feature set” (T = touch screen, 4.3” or larger screen, N = non-eSF and non-lite, L = lite)
    • DD tells the model family:
      • AT – (CS/CX 72x Series)
      • BL – (CS/CX 33x Series)
      • BN – (CS/CX 43x Series)
      • GV – (CS/CX 53x, 63x Series)
      • MH – (CS/CX 92x Series)
      • MM – (CS/CX 73x Series)
      • PC – (CS/CX 93x Series, CX94x Series)
      • PP – (CS/CX 82x Series)
      • ZJ – (CS/CX 42x, 52x, 62x Series)
      • BD – (MS/MX 33x, 43x Series)
      • CT – (MX432 Series)
      • GM – (MS/MX 32x, 42x, 52x, 62x Series)
      • GW – (MS/MX 72x, 82x, Series)
      • PM – (MX93x Series)
      • SG – (B2236 and MB2236 Series)
      • SN – (MS/MX 53x, 63x Series)
    • xx tells the major firmware EC version, while y tells the minor firmware EC version (050 = FW5.0, 051 = FW5.1, etc.)
    • zzz tells the release number within that firmware EC
  • FW2 or FW3 firmware versions are named in the pattern DD.xxy.zzz using the same mapping as above. However, the DD model families used on FW2 and FW3 were changed on FW4 and newer:
    • ATL on FW2 and FW3 becomes AT on FW4 and newer
    • CB on FW2 and FW3 becomes AT on FW4 and newer
    • YK on FW2 and FW3 becomes PP on FW4 and newer

Note:  Ensure the firmware you download is the correct one for the product you have.

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