I used to mine bitcoin back in 2014 and I quit by the time spring of 2015 hit because my equipment was no longer profitable. I had opted to just buy bitcoin instead of mine so I left mining altogether. Now that the price has gone through the roof I was thinking of returning. Is there a way I can upgrade my Antminer S2 to modern equipment or is it just trash now? I know bitmain offered upgrade kits several years ago.. via /r/BitcoinMining http://bit.ly/2tSqudz