Unfortunately the update killed ANC.
Factory FW was the best, 1.0.1.52 was okay but intermittent.
Now on 1.0.1.54 it seems to constantly switch between ANC and what sounds like transparency mode every few seconds.
This is especially noticeable with heavy traffic, but even indoors ANC nolonger cancels out most sound which it did perfectly previously.
I have a second pair for comparison without any updates, they work great other then the nagging update pop-up.
Thankfully I’ve applied for a refund under warranty, such a shame but I’ve given up on them.