Template:G30-like CFW Support
ScooterHacking.org currently has support for the first gen ESC of this model in their CFW Generator available at max.cfw.sh.
For more info and help identifying which ESC you might have visit Ninebot Max ESC Generations.
Once Converted using the guides above, CFW can be generated and flashed using the guides below:
CFW usually refers to custom firmware for the ESC, though there are some CFW versions for BLE and BMS.
ScooterHacking also supports this model with their SHFW.