IBM B50 - Manual (Page 73)

Firmware Update
This selection allows you to update the firmware in your server from an image on a
3.5 inch diskette.
To create a firmware diskette with the latest level of firmware available, see the
following Web site:
http://www.rs6 .ibm.com/support/micro
When you are prompted, insert the firmware update diskette containing the new
firmware image.
Attention: While the new firmware image is being copied into your server, you must
not turn off the server. Turning off the server during the update process may render
your server inoperable.
After the firmware update is complete, shut down and restart the server.
If the firmware update does not complete successfully or the server does not restart
after the firmware update, contact your authorized reseller or marketing
representative.
Chapter 3. Using System Management Services 3-21