Difference between firmware update and repair

I just want to clarify my understanding of this matter. As I read in other threads one should clearly distinguish between repairing and updating firmware on hard disks.

If I understand it correctly, the drive's firmware consists of several parts. Some reside inside chips and some reside on the platters in the SA. If firmware has to be updated, only some modules are updated.

To repair firmware, I assume that one would have to rewrite modules that wouldn't even be touched by an update. And therefore the update software doesn't help with repairing drives as it would only be able to write to certain areas.

Are my views correct, or is that simplistic view flawed? Please enlighten me.

Regards,
weaker

Hi,

yes, I would say U are right.
pepe