Re: UConnect 8.4 Losing Settings.
No, I haven't Josh.
The update link was posted either here or on another forum a while back, but I've not bothered with it, not when its listed fixes, updates and improvements weren't relevant to me (at the time).
Even now, looking through that list there doesn't appear to be anything which addresses the loss of settings.
But I will have a go at it. Who knows, maybe it'll fix it, maybe it won't. In which case the dealer can deal with it when it goes in for its first service.