PROM update with linux

[Hendrik Sattler <ubq7@stud.uni-karlsruhe.de>]

Hi,

I got OBP-3.31 (currently, OBP-3.11 is installed) but do not quite know how to 
proceed. There is no Solaris installed and I doubt that the OBP can read 
Ext3.
Can I refer to the update file directly from SILO?
I have an empty hard drive, how can I format it so that it's suitable for an 
OBP upgrade?

Thanks

HS