Here is the general principle:
can-update-sd15-barracuda-7200-t16855.htmlHere is the utility I use to make sense of the configuration file:
http://www.users.on.net/~fzabkar/HDD/cfsdecod.exeI strongly advise against applying retail firmware to an OEM drive (eg Dell, HP, Apple), or vice versa, unless someone else has been successful in doing so. Many people have rendered their drives inoperable in this way (including other brands, not just Seagate).
I would also examine the update matrix and look for any signs that your existing firmware may not be a suitable candidate for the update. For example, Seagate warns that applying CCxx firmware to an SDxx drive will render it inoperable.