![Come fare il DOWNGRADE del FIRMWARE su NINEBOT ES1, ES2 e ES4 - TUTORIAL CUSTOM FIRMWARE per NINEBOT - YouTube Come fare il DOWNGRADE del FIRMWARE su NINEBOT ES1, ES2 e ES4 - TUTORIAL CUSTOM FIRMWARE per NINEBOT - YouTube](https://i.ytimg.com/vi/T8gpl8UtMGw/maxresdefault.jpg)
Come fare il DOWNGRADE del FIRMWARE su NINEBOT ES1, ES2 e ES4 - TUTORIAL CUSTOM FIRMWARE per NINEBOT - YouTube
![Error code 52 i had this problem with the new firmware update i took of the external battery and it was back to normal but now i cant use the externall battery Error code 52 i had this problem with the new firmware update i took of the external battery and it was back to normal but now i cant use the externall battery](https://preview.redd.it/zkfqhrzddgc71.jpg?auto=webp&s=dd79567ed51741bc8596509ad51cf99deae96fa5)
Error code 52 i had this problem with the new firmware update i took of the external battery and it was back to normal but now i cant use the externall battery
![Today i received this email from Ninebot. Like “please update your scooter to a malfunctioning version” : r/ninebot Today i received this email from Ninebot. Like “please update your scooter to a malfunctioning version” : r/ninebot](https://i.redd.it/rm4dxp0zex761.jpg)