Can you explain/link what you mean by stmicroelectronics?
I am tempted to switch to a gridseed... can you provide a setup guide I could look at?
Never overclocked my Antminer, maybe it has failed, I have a case open with Bitmain, so they should be taking it for repair/replacement soon.
they are drivers to let your pc recognize usb of your asic http://www.st.com/web/en/catalog/tools/PF257938
gridseed are not profitable anymore, it's not advisable to mine with those
i still think that your device is not working because it's damaged or something, or like i've said it could be a device that worked for so long and now it's dead