Several years ago, there was a string of "cannot connect" comments largely from a group of users that had a cable company ISP, and a specific model of modem from that provider. That specific modem was blocking access to ftp addresses. You've noted that you are on a fiber based provider. Makes me wonder if your update via the Uniden ftp address is being blocked, specifically, by the provider, or by some setting in their modem (or it's router, if you have a combo modem with a router). I'm on a fiber internet connection as well, but have had no issues. You may well be on a different one,Update: i used the personal hotspot on my iphone and it updated the firmware as it should. I guess this will be my workaround for now!