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I have a Seagate Barracuda 7200.12 model ST31000528AS.

smartmontools warns me when querying the drive that a firmware update might be available and instructs me to a seagate website link where however there is no changelog shown.
Searching the seagate.com website I could not find any advisories for my current firmware version CC34.
Searching the smartmontools mailing lists shows no reason for displaying the warning apart from the fact of update being available on Seagate website.
Searching the Seagate forums leads to a lot of cases where performance worsenes and a link to a HP-branded update of a previous firmware version that fixes slow performance on very low temperatures.

Given the above, does anyone know what changes have happened inbetween CC34 to CC49? Thanks.

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I don't understand why is it downvoted? –  Costin Gușă Aug 1 '13 at 12:43
    
retitled, please reuse your votes, thanks. –  Costin Gușă Aug 1 '13 at 12:55
    
@Ramhound please let me understand why is not a good question. There is no attack. My english is not native. Thanks. –  Costin Gușă Aug 1 '13 at 13:09
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1 Answer

Unless Seagate publishes the changes the differences between the two revisions one can only assume the only changes were because of compability updates to support new devices released after the HDD you have was released.

Its very unlikely the exact changes have been released by Seagate. Unless there is a specific problem you are trying to solve, skip the update, you risk data loss by updating the firmware on a HDD.

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I'm not referring to risks of not following the procedure, but to the risks of staying at CC34 –  Costin Gușă Aug 1 '13 at 12:42
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@CostinGușă - Your question was not clear. You asked what are the risks of upgrading the firmware, and I supplied those risks, the main risk is data loss. Besides knowing there is a newer firmware what are the reasons you want to upgrade? If there isn't a specific problem you are trying to solve then why bother? –  Ramhound Aug 1 '13 at 12:49
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