I just got this drive (very inexpensively after rebates etc.). I see that Sony's official firmware is BYX3:
Since the drive is a rebadged Lite-On SOHW-1633S, someone suggested the BS41 firmware listed for that drive here:
The latter page also seems to have hints for attempting to load the 1653S firmware into a 1633S.
So what are the pros and cons of these? Or has everyone here just stuck with the vanilla BYX3 from Sony?