Recently tested Bminer: agree, the performance is just amazing. More than 15% faster than EWBF on the same cards. Up to stable 320 Sol/s for 1060 3GB and 600 Sol/s for G1 1080.

But before mass moving to Bminer I have two questions:
1. What the "firmware.bin" file is for? Does Bminer reflash your video cards? Can this affect guarantee?
2. Why it keeps connections not only to the specified pool but two more hosts nowhere mentioned?