As far as I know that there are couple of type of SD22 firmware version is available for this particular model of the hard disk. It seems that Seagate updater rejected the hard drive of yours as this particular version SD22 firmware does not matching with the update matrix. However you will be able to update the firmware in the forceful manner as follow.
You should allow the updater to fail and when you are getting ‘Cycle power to continue...’ simply press Ctrl-C or Ctrl-Break so that you can abort the batch file. Once you have done you will return to FreeDOS command prompt.
After doing that you have to enter below mentioned command.
Once you have done you should power cycle your computer once you have completed with update process.
FDL466.exe -m Brinks -f 2HBXR2B.lod -i ST3320613AS -s -x -b -v -a 20