Lexmark releases new firmware update

Jul 30, 2025

JetWorld confirms compatibility with latest firmware.

Lexmark has released a new firmware update for a range of its monochrome and colour laser printers, dated July 2025.

The new firmware packages — MSLBD.230.441.zip and CSLBL.230.441.zip — apply to the following machine models: MS331, MS431, MX331, MX431, CS331, and CX331.

Following the update, JetWorld has confirmed that its brand toner cartridges are fully compatible with the latest firmware release. The company reassured its customers that there will be no disruption in functionality when using JetWorld cartridges with the updated printers.

Lexmark has not publicly released details regarding the purpose or scope of the update, but users are advised to review any firmware installation prompts carefully.

As with all firmware updates, aftermarket and remanufactured cartridge suppliers continue to monitor developments to ensure continued compatibility and customer satisfaction.

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