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imageCLASS MF4420n Support
Drivers & downloads

imageCLASS MF4420n Firmware Update, Modification of the error that, in rare cases, characters on the LCD are displayed larger.

Content Id: 0400040101



You will be asked to enter the product serial number before downloading the firmware. The serial number usually found rear side of the printer.


A critical error may occur if another computer or application communicates with the printer (for example, printing) while the firmware is being updated.
Do not turn OFF the printer or disconnect the interface cable (USB or LAN cable) while the firmware is being updated.

* In order to prevent this error:
- Connect either USB cable or LAN cable. (USB cable is recommended, as it is not affected by other computers.)
- Disconnect the telephone cable from your printer to prevent FAX interruption while firmware update.
- When connecting with a USB cable, do not connect the cable via a USB hub, as this may cause a connection error.
- When the printer is connected with a LAN cable, do not perform printing while the firmware is being updated.
- The printer may need service when a critical error occurs, such as the printer will not function after it has been turned on.

Firmware and instruction files have been compressed.
The following instructions show you how to download the compressed files and decompress them.

1. To download files, click the file link, click [ Download] , and then input printer serial number to start the file download.
2. Files are saved on your computer desktop.
3. Double-click the file to mount the Disk Image.
4. Double-click the mounted Disk Image.
5. Double-click the Installer file in the folder. Installation starts automatically.
6.Open the decompressed PDF file. Follow this PDF instruction to start the firmware update.

Update History

This firmware includes all previous corrections and improvements.
Correction for an error that, in rare cases, the language displayed on the LCD defaults to English when the user already set it to another language.

File information

File Name : MF4420n_veruptool_V0910_AU.dmg
File Type : FA
File Size : 18309953KB