Yes, My drive came with 3516a, I downloaded the 3516b up date, and applied it, then it wouldn't play back BD-R or BD-RE discs as it told me I needed a critical up date. When I said yes to the critical up date it downloaded a 68MB file which when I ran it back dated my version to 3319. I build systems for a living and have 6 systems with the LG Writer on them and they've all done the same thing