ADO A16, A20, A20F Electric Bike unlock speed limit to 35 Km

1. Simultaneously press and hold the + and – keys for 5 seconds, the display interface enters into interface 2
2. Short Press the Power Key button 7 times to switch to channel P08
3. Short Press the power + key to set the P08 value to 0035
4. Wait for 5 seconds to automatically exit the setting state
5. press the POWER button to shut down, and restart again.

Please this video how to ADO A16, A20, A20F Electric Bike unlock speed limit to 35 Km