It looks like FTDI have made a change of direction.
I was conversing with a supplier about a board I bought with a fake chip and they sent me the link to the FTDI drivers and said try these.
The drivers - CDM v2.112.04 are dated 3 July 2015, only a week ago, so I gave them a try to see.
And lo and behold, my Windows 8.1 machine now recognised the chip and allocated a COM port.
I looked in the Hardware IDs and the PID still shows 0000, so they haven't changed that.
Thinking this was good news I tried to use the board, but no luck.
I did a bit of faultfinding and connected the TX and RX lines together and fired up a serial terminal.
What I found was what I received wasn't what I was sending.
Initially I thought it was some other fault until I realised that what was coming back was NON GENUINE DEVICE FOUND!
For every character I sent, the same number of characters of that message was coming back.
So if I send a 26 character test message, the full NON GENUINE DEVICE FOUND! comes back!
So the chip is still basically bricked!
The only thing I'm interested to know now is it just because my chip was reprogrammed that it still doesn't work, or will a new, non PID modified chip now work with the new drivers.
I only have one of these chips so I'll never know.
Maybe someone has a few of them and can try a fresh one.
I have a strong feeling that they will still not work.
I tend to think that not showing a fault with the COM port but still not letting the chip work will be even harder for most people to figure out.