Funny you should mention this, as I was just given a dinky little E-Machines Etower Celeron 667 by someone, and it had this drive. I found firmware updates at http://www.firmware-flash.com linked from Samsung's korean website (don't try navigating that if you cannot read Korean) . Flashing software is included.
Mine was OEM, with the firmware revision of FT02. I put in the FT08 firmware and it seems to be just fine. Do know that there's quite a few different revs of firmware, so you do so at your own risk.