Lexmark Firmware Downgrade


Lexmark Firmware Downgrade – Unlock Compatibility with Older Toner Cartridges

Are you facing issues with your Lexmark printer rejecting non-original or refilled toner cartridges after a recent firmware update? You’re not alone. Many Lexmark users have discovered that newer firmware versions prevent the use of compatible or remanufactured cartridges, forcing them to rely on expensive OEM supplies.

Why Downgrade Your Lexmark Firmware?

Lexmark’s recent firmware updates are designed to block third-party toner cartridges. While this is intended to maintain product quality, it limits your ability to reduce printing costs using perfectly functional alternatives.

Downgrading the firmware on your Lexmark printer can restore compatibility with older or refilled cartridges. This means:

  • ✅ Continued use of cost-effective toner solutions
  • ✅ Avoidance of “Toner Not Recognized” or “Cartridge Error” messages
  • ✅ Improved flexibility and control over your printing resources
  • ✅ Extended printer usability without costly lock-ins

Compatible Models

Our downgrade solution supports a wide range of Lexmark models, including:

  • Lexmark MS, MX, CS, and CX series
  • Popular models like MS317dn, MS417dn, CX410, CS510, and many more

📌 Note: Downgrading firmware is a safe and reversible process when done correctly. Our solution is tested and trusted by technicians worldwide.

How to Get the Downgrade Firmware

We offer ready-to-use Lexmark downgrade firmware packages along with simple instructions to guide you through the process. The package includes:

  • ✅ Original downgrade firmware file
  • ✅ Step-by-step installation guide
  • ✅ Technical support if needed

👉 Click here to purchase or download the Lexmark downgrade firmware now


SamehFix is committed to helping users extend the life and flexibility of their printers. Don’t let a firmware update stop you from using reliable and affordable toner options.

Why Firmware Version LW63 ?

1- If you have Lexmark Resetter , you know that printer must have firmware version lower than LW70 to save your toner chip from damage “Locked chip “
2- More new toner chip do not work perfectly on firmware version LW90 for this , you must downgrade your printer firmware
3- My Firmware modified to solve “INVALID CODE ” message when downgraded from firmware version LW90 .

If you need assistance or want to confirm compatibility with your model, feel free to contact us.


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