Best Firmware for my Toshiba SD-M1612 DVD-ROM Drive

CD, DVD and (Ultra HD) Blu-ray Writers
#1

I have a Toshiba SD-m1612 B version can any one tell me what is the best firm ware for it I am running 1004 and I also flash it to be region free.I see there is 1so8 is that for my dvd

thanks