Epson Stylus Pro 4900/Epson Stylus Pro 4910  Revision A
ADJUSTMENT  Installing Firmware  307
Confidential
4.5  Installing Firmware
This section explains how to update the firmware. The firmware of this printer is 
written in the Flash ROM on the Main Board. If the main board is replaced or the 
firmware needs to be updated, follow the procedure below to write the firmware to the 
Flash ROM. 
Following three kinds of firmware are provided. 
 Main firmware 
 Network firmware
 Firmware for SpectroProofer
PROCEDURE
1.  Turn both the printer and computer OFF and connect them with a USB cable.
2.  Turn the printer ON.
3. Start the Service Program and click [FIRMWARE UPDATE TOOL] from the 
main menu.
4. Click [Get Information] to check the current F/W version.
Figure 4-8.  FIRMWARE UPDATE TOOL
C A U T I O N
When Initial Charge is not needed when replacing the Main Board 
with a new one, make sure to execute “Initial Ink Charge Flag ON/ 
OFF” (p315) before updating the firmware.
(The printer is rebooted automatically right after uploading the 
firmware. Since the parameter does not exist on the new Main 
Board, the ink initial charge operation starts automatically.) 
C H E C K
P O I N T
All firmwares are available by installing via USB cable connection.
C H E C K
P O I N T
The execution method differs depending on the type of firmware to 
be installed.
 Main firmware: 
Any of Normal Mode/Serviceman Mode/Firmware Update 
Mode
 Network firmware: 
Any of Normal Mode/Serviceman Mode/Firmware Update 
Mode
 Firmware for SpectroProofer: 
Normal Mode or Serviceman Mode
To enter the Firmware Update Mode, turn the printer ON while 
pressing [Paper Source  ] + [Paper Feed  ] + [Paper Feed  ] + 
[Menu  ].