About my experience with (3TB) ST3000DM001 disks, these ones had the firmware CC43.
I tried to recovery the disk with Seagate's tools, but I couldn't complete any of tests. The SMART features didn't work. One interesting thing was that the disks under Mac or Windows show a capacity of 4.14TB! (when it should be 3TB!)
According to Seagate support team, the firmware couldn't be updated, and the only solution was return the disks.