Unable to pair

[ealmiladi]

Hi, thanks for the great work on this.

I'm trying to pair with my Ninebot MAX G2. I'm able to get Received pingAck1 or pingAck2, breaking the loop, but I never end up receiving the, Received pair Ack, breaking the loop - we can now send messages to scooter message.

I can't seem to figure out why it wont actually pair; do you happen to have any ideas as to how to get past this?

EDIT: Seems like hitting the power button twice will lead to the scooter eventually being paired, but then it seemingly disconnects immediately:

2024-09-22 15:13:01.189 15752-15831 NB_BLE                  de.irmo.a9unbot                      I  Received pair Ack, breaking the loop - we can now send messages to scooter
2024-09-22 15:13:06.246 15752-15831 nb_ble                  de.irmo.a9unbot                      I  Disconnected from BLE device
2024-09-22 15:13:06.256 15752-15836 BluetoothGatt           de.irmo.a9unbot                      D  cancelOpen() - device: E2:5D:08:39:46:F7
2024-09-22 15:13:06.263 15752-15761 BluetoothGatt           de.irmo.a9unbot                      D  onClientConnectionState() - status=0 clientIf=6 device=E2:5D:08:39:46:F7
2024-09-22 15:13:06.268 15752-15761 BluetoothGatt           de.irmo.a9unbot                      D  setCharacteristicNotification() - uuid: 6e400003-b5a3-f393-e0a9-e50e24dcca9e enable: false
2024-09-22 15:13:06.283 15752-15761 nb_ble                  de.irmo.a9unbot                      E  Error in setupNotification: Disconnected from MAC='XX:XX:XX:XX:XX:XX' with status 0 (GATT_SUCCESS)```

[irmo-de]

Look for this entry:
private void performBluetoothOperations(BleUartCommunication uartCommunication) throws Exception {
ProtocolNinebot NbProtocol = new ProtocolNinebot("NBScooter1777");
And change it to match your scooters bluetooth name

[ealmiladi]

Look for this entry: private void performBluetoothOperations(BleUartCommunication uartCommunication) throws Exception { ProtocolNinebot NbProtocol = new ProtocolNinebot("NBScooter1777"); And change it to match your scooters bluetooth name

I’ve taken that step already. I suspect either the encryption has changed in the latest BLE firmware for the G2, or that the protocol has changed slightly.

[irmo-de]

Oh I see, you could try this python implementation and see if you can connect.
https://github.com/dnandha/miauth

[irmo-de]

There is a bug fix for:
app/src/main/java/de/irmo/a9unbot/ProtocolNinebot.kt
not sure if this will fix your issue.

[ealmiladi]

I applied that bugfix too. Unfortunately, no result. But thanks!