Hitachi DK23CA-20 Firmware

[Asque]

I have a 2.5" hard disk with firmware version 00H1A0A3.

I seek a firmware update for the Hitachi DK23CA-20 drive.

What is the newest version of the firmware available for the DK23CA-20 disk?

I have located a few firmware downloads for the DK23CA-20 disk and enumerate them below:

From IBM: A bootable CD image with many firmwares for many different disks.
http://www-307.ibm.com/pc/support/site. ... MIGR-62282

From Dell: A download titled "IDE / EIDE: Hitachi DK23CA 10/20/30GB Notebook Hard Drive, Firmware, Multi OS, Multi Language, Multi System, v. A0G3, A01"
http://support.dell.com/support/downloa ... leid=42344

From Hewlett-Packard: "Hitachi DK23CA-xx Hard Drive Firmware Upgrade" A0J2
http://h20000.www2.hp.com/bizsupport/Te ... esId=96308

From the downloads enumerated (or others that may exist) and the currently used 00H1A0A3 firmware, which is the most recent version of the firmware?