Seagate's updater always checks the model number and family, either explicitly (1), or by reference to an update matrix in a configuration file (2).

(1) fdl464.exe -m %family% -f %firmware% -i %model% %options%

(2) fdl464.exe %options% -h %cfgfile%

Here is an example of a decoded configuration file (cfgfile):
http://www.users.on.net/~fzabkar/MS-SD1A.TXT

You can't go wrong with method (2), but method (1) will allow you to apply the firmware update to an incompatible firmware version. For example, you must not download SDxx firmware to a drive with CCxx firmware.

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A backup a day keeps DR away.