Glad you're back in business. "Dos mode" flashing with GHR6 (after acquiring the bin file) can be done successfully. The problem seems to be in the Window's based installer provided by Liteon and when UDMA is enabled in the bios for the drive. People have reported that (temporarily) turning UDMA off for the drive in the bios (until after flashing) and using the liteon supplied flash has been successful.
A region free drive is possible. But rules are rules, so I'm afraid that can't be discussed here.
Please remember to post back whether your problem is resolved or
not, so that others may gain from the knowledge.