Constant beeping after ES4 Flash

PintSizeMaple
Posts: 2
Joined: Wed Aug 12, 2020 4:43 pm

Constant beeping after ES4 Flash

Postby PintSizeMaple Wed Aug 12, 2020 5:42 pm

I have a fleet of ES4 scooters, several in need of controller replacement. After replacing the controllers in a few, I consistently was getting an error 35. After reading around on the forum, I figured I needed to flash them and update the serial number in order to activate them.

After updating the serial numbers and flashing custom firmware using Ninebot-Flasher the scooters now run but have practically no power, maxing out at about 10km/h and unable to make it up the slightest incline. In addition to this, the scooters are beeping constantly despite no error code being present. This is not an isolated issue, I have the exact same problem on three ES4s now.

This has been my process thus far:
1) Update the serial number on the unit (kept essentially the same number but randomized the last four digits)
2) Flash custom firmware from https://esx.cfw.sh/classic (tried both default ES4 settings and custom options including removing the speed limit and increasing motor power)
3) Flash the BMS and eBMS with v.141 from https://files.scooterhacking.org/esx/fw/bms using Ninebot-Flasher

I have tried several different firmware options with no success. The new controllers I installed are from ninebot and definitely legit. I would sincerely appreciate any suggestions, as I have exhausted all my options!
DragonKN
Posts: 2
Joined: Thu Aug 13, 2020 1:47 am

Re: Constant beeping after ES4 Flash

Postby DragonKN Thu Aug 13, 2020 12:46 pm

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
PintSizeMaple
Posts: 2
Joined: Wed Aug 12, 2020 4:43 pm

Re: Constant beeping after ES4 Flash

Postby PintSizeMaple Tue Aug 18, 2020 12:11 am

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
Thanks for the links, which error code should I be addressing? I assume you mean the error code 35 I referenced, but after flashing there is no error code on the dashboard, only a continuous beeping. I have already changed the serial numbers on each scooter from the default.

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