I have a similar problem to the one above and I tried the cgminer.exe too. I read through the readme.txt files but, I could not find any init commands to control the Vcore of the bfl chips. My vcore starts to fluctuate wildly after awhile. Is there any command to lock the Vcore down? I really don't want to damage my bfl miner. I would really appreciate a little help.    Just tell me how much btc I should send.