Ninebot ONE S2 Linki: https://forum.electricunicycle.org/topic/9526-ninebot-a1s1-to-s2-upgrade-effort/ https://forum.electricunicycle.org/topic/10625-speed2increase%EF%BB%BF-and-how-to-change-max-ninebo%EF%BB%BFt-%EF%BB%BF%EF%BB%BF%EF%BB%BFspeed%EF%BB%BF/