You must perform this task on a stand-alone Sun Ray server or the last Sun Ray server configured in a failover group. It takes the current firmware available on the Sun Ray server and upgrades all the firmware on the Sun Ray Clients.
Log in as the superuser of the Sun Ray server.
Synchronize the Sun Ray Client firmware.
# /opt/SUNWut/sbin/utfwsync
The Sun Ray Clients reboot themselves and load the new firmware.