[lagorcejb]

Hi,

I have make the convertion by flashing the Firmware of all element.
The charger work.
The Scooter work but is in limited Mode.
And the Error 27 is on the screen.

Someone know what's can it be ?

[Sc00tr]

A little late, but this came up pretty high in google search for "error 27" so I'm leaving this solution for others looking:
As soon as you press the on button, press and hold brake and throttle until you hear the first beep, then let go after.

To permanently fix this so that you don't have to do this, stlink the ESC with the right firmware, or flash the 3.0.4 error 27 fix bin file through ninebot IAP.

[Yoli2]

FOR NINEBOT MAX (not ES4)

also, if you're using this firmware generator: https://max.scooterhacking.org/classic
if you turn on "Bypass Ninebot BMS requirement" then it should also disable error 27