Was that new board delivered by a field service engineer?
They are supposed take care of that for you, per the terms
of your support contract and the complexity of the Sun Fire Midrange systems.
Alternatively, are you on a datacenter site that simply gets parts,
and "never" sees the field service staff because of security levels ?
(... or were they sneaked onto a Bronze contract though they should be Silver or better ... )
If that is the case, then call back to Support on that same service case number.
Have the support engineers get you the procedures.
The documents should be easy to email to you, else be a link at Sunsolve.
Too much time has passed for me to remember every step,
but it's as straight-forward as that "update-proms" command
which was only used for the Enterprise servers, E3000 -- E6500.
Don't forget to review the README in the 5.19.x patch (patch # 114526-xx)
in addition to whatever additional procedures you might receive.
Ah, yes ...The synapses for memory are firing properly again !
For others that may read this thread in the furure,
that command is used at the Platform Shell to update one board
when the rest of the chassis is already at a newer firmware level.
There are a whole bunch of "gotcha's" so it is best to do this
only after you've reviewed the entire procedure with Sun Support.