I just got off the phone with Horizon Hobby (Losi). They said they're not releasing any new firmware and they don't really support LiPo batteries on the LOS9515. What the hell is that?
They say Lithium Polymer batteries are intended to be used with their race ESCs. Bunch of shit if you ask me.
Two down with Losi. I bought their LOS5000 LiPo charger and it exploded on the fifth charge and now this ESC.
I doubt I'll ever buy Losi again.