Hi,

This error code is an issue about the serial number of the unit.

Here you can see the error code list:
https://www.passiongadgets.com/segway-n ... rror-code/

And here is the serial number guide:
https://wiki.scooterhacking.org/doku.php?id=nbesx

Hi guys!

Recently I bought a used external battery for my Ninebot ES2 and probably it was used on a rental scooter, I´m receiving error 42 and I think its the rental firmware on it´s BMS.
My question is if there is a way to flash this battery directly through uart connection or using a ST-LINK v2.