I found a 36GB NetApp drive for my f740 with FC9 shelves and when I put it in the machine, it said:
Tue May 23 19:14:07 EDT [raid.assim.disk.badlabelversion:error]: The label on disk 7.54 (S/N 3CD0FN3X000021098HUD) is a newer version than that supported by this software. Either remove the disk or upgrade the system software.

Of course, the disk_fw_update command didn’t work because the versio of the firmware is NEWER than what’s supported by my OS (Data Ontap 6.4.4p7).  How does one go aboot DOWNGRADING the firmware on a NetApp drive?

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nate