EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Product Description Operating Panel 66
1.4.4.23  Firmware Version
Firmware version is displayed as following;
 Stylus Pro 4400/4800
 Stylus Pro 4450/4880/4880C
No. Description
1 Assigns special specification version. "A0" is normally displayed.
2 Firmware version (4 letters)
3 Displays the following;
When the printer is Stylus Pro 4800: 8 
When the printer is Stylus Pro 4400: 4
4 When the function is effective for business systems, "1" to "F" are displayed 
according to the calculation result obtained form the following printer conditions.
 bit0: Graphic printing control function status
0: When Graphic printing control function is invalid
1: When Graphic printing control function is effective
 bit1: Credit function status
0: When Credit function is invalid
1: When Credit function is effective
 bit2: Credit counter status
0: When the number of Credit is 0 or Credit function is OFF
1: When the number of Credit is 1 or more with Credit function ON
 bit3: Reserved
5 Displays a custom number when custom action is specified in special setting, 
and displays "0" when custom action is not specified.
12 345
No. Description
1 Assigns special specification version. "A0" is normally displayed.
2 Firmware version (4 letters)
3 Network firmware version
4 Displays the following;
When the printer is Stylus Pro 4880/4880C: 8 
When the printer is Stylus Pro 4450: 4
5 When the function is effective for business systems, "1" to "F" are displayed 
according to the calculation result obtained form the following printer conditions.
 bit0: Graphic printing control function status
0: When Graphic printing control function is invalid
1: When Graphic printing control function is effective
 bit1: Credit function status
0: When Credit function is invalid
1: When Credit function is effective
 bit2: Credit counter status
0: When the number of Credit is 0 or Credit function is OFF
1: When the number of Credit is 1 or more with Credit function ON
 bit3: Reserved
6 Displays a custom number when custom action is specified in special setting, 
and displays "0" when custom action is not specified.
12 4563