The printer firmware version can be found by printing the configuration page from the printer or viewing the Configuration page from the web browser.
To print the configuration page:
Press the Menu button on the MFP
Select Information
Select Print Configuration
Locate the Firmware Datecode on page 1 of the printout
To locate using the web browser:
Point a web browser at the IP address of the printer
From the Information tab choose the Configuration Page option
Locate the Firmware Datecode in the Device Information section