Unfortunately you'll need to provide more information for anyone to be able to help with your problem as the Blue Furies can display different errors and act differently on different operating systems.

I don't recall Windows recognising my Furies at first either, so I don't think that's a deal breaker. What you need to do is make sure that you're using the right driver for the correct miner. BFGMiner uses the BF1 drivers and each Fury needs to be seperately updated with the driver. CGMiner use the Zadig drivers and I think it automatically updates each Fury.

Initially I tried to use the Zadig driver incorrectly with my Furies running BFGMiner, but it just didn't happen. I can't advise on CGMiner and Zadig as I don't use CGMiner but for BFGMiner I found that I needed to remove the Zadig files completely from my system (then reboot, always reboot you know the drill) before I could get the BF1 drivers to update properly.

I'm using BFG 3.5.1 for my Furies and its still working well. I know you don't want to hear this but reading this long thread will help as there's loads of people who have commented on their particular OS and their particular problems so you will likely find someone who has experienced your frustration before and managed to overcome it.

I have no idea about firmware updates so perhaps someone else can comment on that but don't overlook seemingly inconsequential things like turning on and off hubs, pulling the Furies out and putting them back in again, rebooting Windows if you've been messing about with various usbs/hubs/ports for a while and if it's going no-where, don't be shy about completely uninstalling all usb root and hub instances using the Device Manager, then do a clean start by powering down then powering back up.

You could spin your wheels for ages waiting for people to provide the key to unlock your Fury mystery but if you're prepared to take the time, much of the gnashing of teeth and tricky solutions are documented on this thread, so dive in, dig deep and when you feel you're getting closer to identifying the problem, post again with specific OS details and other information about your set up.

Anyway, I feel your pain but don't give up, they hash well once you've got them going and then you can move onto the pencil mod

Good luck!