So after a little over 24hrs I've learned a little and been angry a lot.

Of the 9 Sierra's 2 are useless. 1 fails to power up although did power for a short time today, on connecting it to CGminer it immediately gave an error along the lines of 'Main Board 12V error' and crashed CGminer.

The other problem Sierra was running fine but now does nothing but crash CGminer with Libusb errors.

I've had a few hours of easy running with the other 7 machines but now im having to restart every 20 mins or so.

Whilst the .4 firmware may solve some of this, there appears to be no support for windows users with the instructions only talking about Unix or babyjet users flashing their cards.