- Press the "*" and "#" buttons simultaneously.
- The LCD will display the firmware version on the upper left corner.
- The letter showing in the first or second location from the left represents the firmware version of the unit.
For MFC-8860DN users:
If your firmware version displayed on the LCD is between "A" and "K", a firmware update is required.
For MFC-8870DW users:
If your firmware version displayed on the LCD is "A", "B" or "C", a firmware update is required.
For the details how to update the firmware, click here.