IBM F50 RS/6000 7025 - Manual (Page 90)

Update
This selection allows you to update the service processor and system firmware in
your system unit from an image on a 3.5 inch diskette. After choosing to update the
firmware and confirming this choice, you must insert the diskette containing the
firmware image.
ATTENTION: While the new firmware image is being copied into your system unit,
you must not turn off the system unit. Turning off the system unit during the
update process may render your system unit inoperable.
After the flash update is complete, the system unit restarts.
If the flash update does not complete successfully or the system unit does not restart
after the flash update, contact your authorized reseller or marketing representative.
3-22 IBM RS/6000 7025 F50 Series User's Guide