One more data point - I have three R606 from 419.  One of them was giving me the blinking lights and would not mine higher than about 200GH.
I worked with Nick from 419 and after compiling the latest cgminer on a RPi all three are hashing 800-900 each now.
This is using a Gekko USB hub and one of the HP DPS-1200FB power supplies.  
Again it is on a RPi.  I have tried mining with cksolo, kano, and slush and ASICBoost works on all at the same 900GH on all.

The one miner that is blinking is apparently #1 off the "assembly line" according to Nick (it does not have a notch on the case for the USB connection).
While it is still blinking, it is running nicely now.

Using a laser thermometer, the temperature on all three miners is about the same - about 100F.

These are great little machines - thank you sidehack for making them and vh for updating the cgminer!!