got 2 antminer s4 they were working great n couple days ago they stopped mining, when logging into them under status overview the hardware version shows x.x.x.x also cgminer shows nothing just a blank spot where it should show the version. Are these things just expensive paperweights now or what? I've already tried ssh into them to install cgminer, once it restarts its still blank, have also tried updating firmware still no go. Any thoughts?
Did you try with reflashing microSD card. I had similar issues on S2 and every time reflash of microSD did the trick, also those microSD know to brick without reason so you could try with new one.
