IBM F50 RS/6000 7025 - Manual (Page 184)

10. Replace the covers as described in “Replacing Both the Front and Side Covers”
on page 5-96.
11. Restart the system and go to the system management services to check the
system firmware level.
If you have a graphical monitor, go to “Graphical System Management
Services” on page 3-1.
If you have a tty monitor, go to “Text-Based System Management Services”
on page 3-24.
The version level has the letters 'wil' and five numbers in it. The numbers
represent the year and the day of the year the firmware was created (yyddd),
where ddd is the julian day that the firmware was created.
12. If the firmware level already installed on your system is an earlier level than is
indicated on the system firmware media included with your new CPU card,
update the system firmware.
13. Restart the system.
5-40 IBM RS/6000 7025 F50 Series User's Guide