HP laserjet m233sdw firmware error 49

[sancg2001]

Error 49 firmware error, unable to update... any solution  to reprogram the firmware ic,

[zoey7886]

@sancg2001, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding your firmware error! 

We're thrilled to have the opportunity to assist you and provide a solution.  

The 49 Firmware Error on the HP LaserJet M233sdw usually indicates a communication failure between the printer and the firmware. This error can sometimes be fixed by resetting, updating, or reprogramming the firmware IC. Here’s a step-by-step approach to resolving the issue:

Power Cycle the Printer:

• Turn off the printer.
• Disconnect the power cable and any network/USB cables.
• Wait for 5 minutes, then reconnect and power it back on.

Check for Print Jobs Causing the Issue:

• If the error appears when printing a specific document, clear the print queue from your computer.
• Try printing a different document to see if the issue persists.

Disconnect Network & USB Connections:

• If the printer is connected via network or USB, unplug all connections and restart.
• If the error disappears, a corrupt print job or network issue might be causing the error.

Firmware Update (If Possible)

If the error allows you to access the printer menu or connect via a USB/network, update the firmware:

Download the Latest Firmware:

• Go to HP Support.
• Search for LaserJet M233sdw and download the latest firmware.

Update via USB or HP Easy Firmware Update Utility:

• Connect the printer to a computer using a USB cable.
• Run the firmware update tool and follow on-screen instructions.

 

[zoey7886]

Reprogramming the Firmware IC (If Firmware Update Fails)

If your printer is stuck in a firmware error loop and doesn’t allow a normal update, you may need to reprogram or replace the firmware IC.

1. Identify the Firmware IC

• The firmware is typically stored on an SPI Flash IC or an EEPROM chip (commonly Winbond 25Qxx series).
• The chip is found on the printer’s mainboard.

2. Dump and Reprogram Firmware

• Use a CH341A programmer or a TL866II Plus EEPROM programmer.
• If available, obtain a working firmware dump from a similar printer or from online sources.
• Flash the IC using the programmer and solder it back onto the board.

Take care, and have an amazing day!  

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