BFI now works on the UK 55” LG B9 with firmware v3.60.35 which I updated to over a week ago, though I had to do this manually via a USB memory stick as it was only available from the LG website. My TV would report no updates when checked from its menu on v3.60.19. It seems to work fine; the picture dims slightly and the flicker is noticeable for a few seconds before my eyes adjust and it becomes watchable. Not sure that I’d use it personally but the option is there.
Also, on the UK model there are options to disable suggested content and advertising from the General menu. I have no adverts on my Home bar for example. This is for v3.60.19 and v3.60.35.