I need to update firmware for my Seagate ST3250310AS 250GB SATA HDD, but there is a problem:

this is a SCSI hard disk that it is already installed in a HDD's box of a dell 840 server, I downloaded a Seatool.exe which happens to be a software to detect and make diagnostic of seagate's hdd or any seller company, but when I run the test it delivers this result:

serial number:6RY9QMNC

model number: ST3250310AS

serial part number:9EU132-305

Firmware revision: F

p.s by the way, what means "F"?

I go to advanced test button, that leads me to another dialox box that has an option to update the firmware, but the file type that this updating requires are either .sea or .Lod, I downloaded a .zip but it didn;t work. need some help . thanks