Firmware Error: Fix Brother Error M12 — Step by Step
📑 In This Guide
Is your Brother DCP printer showing error M12? You are not alone. The error code M12 indicates firmware error, and it affects thousands of Brother printer users worldwide. The good news is that this error is usually fixable at home without calling a technician.
In this comprehensive guide, we will walk you through 4 proven methods to fix Brother error M12. We have organized these fixes from the simplest to the most advanced, so you can start with the easiest solution first. Most users can resolve this error in under 22 minutes.
What Is Brother Error M12?
Error M12 is a common Brother printer error that indicates firmware error. This error can appear on your printer's control panel display or as a pop-up message on your computer screen when you try to print.
When error M12 occurs, your printer may stop printing, flash warning lights, or display the error code. The root cause is typically related to the scanner lid or front cover is not fully closed. Understanding what triggers this error is the first step toward fixing it.
Error M12 can affect various Brother DCP models, both older and newer versions. If you are experiencing this error, do not worry — we have compiled all the necessary troubleshooting steps below to help you get your printer back to正常工作.
Common Causes of M12
This error can be triggered by several factors. Understanding the root cause helps you choose the right fix.
- The scanner lid or front cover is not fully closed.
- Corrupted printer driver or software configuration.
- Printer firmware needs to be updated to the latest version.
Printer Models Affected by M12
M12 has been reported on the following Brother printer models:
| Printer Series | Models | Common? | Easy Fix? |
|---|---|---|---|
| Brother DCP | DCP-L5650DN, MFC-J760W, MFC-J490W | ✅ Yes | ✅ Yes |
Error M12 is common on Brother DCP series printers.
4 Proven Ways to Fix M12
Try these methods in order. Start with the easiest and most common solutions first.
Method 1: Restart Your Brother Printer
Easy ⏱ 2 minutes-
1. Press the power button to turn off the printer.
2. Unplug the power cord from the wall outlet.
3. Wait for at least 60 seconds.
4. Plug the power cord back in.
5. Turn on the printer and check for the error.
Method 2: Check and Resolve Firmware Error
Easy ⏱ 5 minutes-
1. Open the front cover and toner/drum access door.
2. Ensure the cover is closed securely.
3. If replacing toner, shake the new cartridge gently before installing.
4. Close all covers and try printing again.
Method 3: Reset the Printer Settings
Medium ⏱ 5 minutes-
1. Press Menu on the printer control panel.
2. Navigate to General Setup or Initial Setup.
3. Select Factory Reset or Reset All Settings.
4. Confirm the reset when prompted.
5. The printer will restart automatically.
6. Reconfigure date, time, and network settings.
Method 4: Update Printer Firmware
Medium ⏱ 10 minutes-
1. Visit the Brother Support website (support.brother.com).
2. Enter your model: DCP-L5650DN.
3. Go to Downloads section.
4. Select Firmware and download the latest version.
5. Run the firmware update tool.
6. Do not power off the printer during the update.
7. Restart the printer when done.
If you have tried all methods above and error M12 persists, contact Brother support. They can run advanced diagnostics and arrange a repair if needed.
Frequently Asked Questions (FAQs)
Brother error M12 on your DCP-L5650DN indicates firmware error. Try restarting your printer first.
Follow the step-by-step methods in this guide. Start with a power cycle, then check the specific component mentioned in the error.
It is best to resolve the error before continuing. Some errors like toner low allow limited printing, but others may stop printing entirely.
Brother drum units typically last for approximately 12,000-30,000 pages depending on the model. The printer will warn you when replacement is needed.
Most Brother errors can be resolved at home. Only persistent hardware failures like fuser or laser issues require professional service.
Conclusion
Brother error M12 can be frustrating, but as you have seen, there are 4 effective ways to resolve it. In most cases, starting with a simple power cycle or checking your cartridges will solve the problem quickly.
If you have tried all the methods above and the error M12 persists, it may be time to contact Brother support for professional assistance. Remember to keep your printer's firmware updated and use genuine supplies to prevent future errors.
Start with a power cycle for Brother error M12. If that fails, check your cartridges and clean the contacts.