Same here. MW08 with standard ear tips. I’ve updated to 5.3.9 last night, and I feel they are tuned a bit “hotter” now.
I liked their full warm bass, especially in ANC “max” setting, but didn’t like it becoming occasionally bloated. And I could do with a little less laid-back trebles.
I’m pleased to report that M&D corrected exactly these points. They didn’t diminish the bass punch in ANC “max” setting. I’d say bass tuning is very similar to before, but I feel it’s a little less “warm”. The bass doesn’t reach lower in absolute frequency than before, but it seems the weight has moved a tad more towards the lower end, separating it better from the mids.
Trebles have become a little crisper and ever so slightly grainy, which - for me - makes it much more entertaining to listen to.
Overall, no massive changes, though. But in my book the MW08 were already very good before…