Ninebot ESX DRV 1.3.9
Firmware is the "operating system" of the different parts of the scooter.
To view all firmware files for the Ninebot ESX (ES1, ES2, ES3, ES4) and SNSC 1.0/SNSC 1.1, visit Ninebot ESX Firmware.
DRV firmware is responsible for the ESC and the driving performance of the vehicle.
DRV firmware is also known as ESC (Electronic Speed Control) or "Master Control" firmware.
DRV 1.3.9 was the third known version of DRV firmware update for the ESX series.
Official Changelog
1. According to the max speed requirement issued by the National Technology Standard Institute, please upgrade the firmware of your Ninebot KickScooter ES.[1]
User Notes
Not a very helpful update message, which is typical of Ninebot...
Files
Zip: DRV139.zip, Format: CFW ZipV2 Format
Bin: DRV139.bin, Format: CFW Bin Format
Encoded Bin: DRV139.bin.enc, Format: CFW Encoded Bin Format