Based on your serial number (B208) I am believe you have the new drive (DDW 813S) with the updated drive firmware. I think the DDW 813S without the update shows up as B205 in the serial numbering sequence.
As you suggest, the A092 on the back near the chassis serial number is most likely your factory installed FW version (Australia 092).
It may be worthwhile to try and reflash with the factory version (unhacked) 098 FW and see if your problem goes away. ILOHacker is a great tool but some folks have had some odd problems crop up that could be related to the methodology ILOHacker uses for hacking. A more precise hacking method would be to hack the FW manually using a hex editor.
Clearly something changed after you updated your FW. If you go back to the factory version of 098 and it still behaves the same then ILOHacker had nothing to do with the problem. It could be a bug though in the 098 FW. It is also equally plausible that it is the drive FW upgrade that is the culprit.
I have not had the magnitude of problems that many users have had. But I have the older drive, DDW 411S. This drive has not had a FW update either. So I have a very different set of conditions. This is why I postulate that the problem is related to the newer drive or the drive FW upgrade.
Try going back to an unhacked 098 and see if it makes a difference, I doubt it will, but it will eliminate 1 variable.