Last time I attributed it to SW update. However today it happened again and it did not even come back after setup. Couple hours later the FB wifi appeared again and I was able to set it once again and get access to the FB.
Not sure how long it will last this time.
Very sorry i didn’t get to this. Traveling and all that. I believe i have a fix that will go out today. I’m going to call it 6.4.11 so anyone who made it to 6.4.10 gets a proper update also.