It appears so. Someone with the Sony DVDDirect was able to dump the firmware, and it was BY03, which is a DRU-710A firmware. If this is so, it would mean that this drive should be just as patchable as any other LiteOn 3S DVD writer.
This is the thread where this was mentioned: [thread]119378[/thread]
As for how you'd flash or dump the firmware, I'm not sure how you'd do that exactly, but my best guess is that you'd connect it to a computer, and when connected, it would be recognized by the computer as an external DRU-710A.