Ninebot Max Error Code 26

File:NinebotMaxError26.png
Error 26 on a Ninebot Max.
"Flash Storage Error, Please check the Control Board"

Cause

The cause of this error is not yet known.

Fix

Try flashing the ESX again using the guide at Flash Ninebot Max ESC.

if that doesn't work, you may need to STLink using the guide at STLink Ninebot Max ESC instead.