I changed as post #210.  and still got ZOMBIE after only a few seconds at almost all miner settings.

I wonder why the red led comes on when the usb plug is inserted and not the power cord.  My thinking is that the unit requires a powered USB port.
switching the unit over to a powered usb, stopped my ZOMBIE problem.

Also the thing is a lonely beast.  All other miners were removed from the computer (win 7).

messing with the voltage and freq settings it tops out at 66.5Gh/s which quickly declined.

It hovers around 53GH/s at the setting recommended.