I can find a pcb with the correct firmware, and I can find a board with the correct IC# but not both at the same time. Is it possible that one of these will work?

Thanks, Ben

MODEL: st3120026a
PN: 9W2083-306
CONFIG: D4H-02
FIRMWARE: 8.54
DATE: 05164
SITE CODE: WU
IC: 100274360
MOTOR IC: SH650
PCB: 100306044 rev a

Seagates are a pain.
That Firmware: 8.54 is only the first three digits of the firmware which is really in the drive.
I have seem them change the firmware once a week.
I normally try to match the first 5 digits (or more) of the serial number.

If you had PC-3000 or Salvation data you can read the exact version it has.

I'll can check on mine .. bbl

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Please (free) help :
http://rzr.online.fr/q/hdd#
how to unlock/format ST3120026A in max security ?
"ALPINE - 1_Disk M.14 01-16-03 11:51"

There are some funny things going on with latter version of Seagate. We are working on it. Point is ROM contains info for this very drive and if you connect different lb to hd it will attempt to reprogram lb. As a result lb will be not work for nothing. Be careful.

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Good Luck
http://www.datarecovery.net