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

You are correct
and ussually update procedure needs fully-functional drive (with a good firmware inside)

I think the firmware update procedure works with the ROM code most of the times only sometimes with the modules .

I think you are not right
Usually upgrade procedure modifies ROM and modules on platters
Sometimes it is only modules upgrading

thats what i said that it works with the ROM code and sometimes modules , but most of the time ROM.

hmmm :)
I was not clear
The correct answer is - upgrade works with modules and sometimes ROM, but most of the time modules.

Thanks to all for the input. It is clearer now

Regards,
weaker