Samsung SH-W162C firmware version blues

Hi. I just finished crossflashing my Freecom RW…whatever to its rightful name (read about the hassle here). I discovered that Samsung has two lines of firmware for (not only) this drive, which they distinguish as Global Distribution and Thailand Distribution. I loaded the Thailand Distribution since it was less different from the original Freecom firmware. Now I’m wondering if I can put the global firmware in. since the two are quite different, comparing with TotalCommander, so I would like to know if anyone knows what the (hardware) differences are between these distributions and whether I can safely flash it to global firmware.
Thanks in advance!